Precision Sealing Components

SS Sealing Bushing & Filtration Gasket Manufacturer in India

Premium stainless steel sealing bushings and precision filtration gaskets manufactured via CNC turning & Traub machining. SS 304 / SS 316 / SS 316L components with ±0.005mm tolerance — serving oil & gas, hydraulic, pharmaceutical, and filtration industries since 1975. Bhayandar, Mumbai.

±0.005mm Tolerance
SS 304 / 316 / 316L
MOQ 50 – 100,000 pcs
Export Ready
Pressure-Tested
Custom Profiles
Request Quote Call Now
50+ Years Experience ISO Quality Standards Global Export
SS Sealing Bushing SS Filtration Gasket Custom Machined Profile Precision Quality Inspection
Sealing Bushing
Sealing Bushing
Filtration Gasket
Filtration Gasket
Custom Profile
Custom Profile
Quality Check
Quality Check
50+
Years of Experience
±0.005
mm Tolerance Achieved
5+
CNC & Traub Machines
40+
Countries Exported To
Product Overview

What Are SS Sealing Bushings & Filtration Gaskets?

SS Sealing Bushings are precision-machined cylindrical sleeves manufactured from stainless steel — primarily SS 304, SS 316, and SS 316L — designed to provide a leak-proof seal between rotating shafts, static housings, or mating surfaces in hydraulic, pneumatic, and fluid-handling systems. They serve as critical interface components preventing fluid or gas leakage under high pressure and temperature conditions.

Filtration Gaskets are precision-perforated or profiled flat/ring components manufactured from stainless steel, used as sealing and flow-control elements in filter assemblies, strainer systems, and fluid separation equipment. The precision-patterned perforations allow controlled flow rates while preventing particulate bypass.

At OM Engineering Works, we manufacture both SS sealing bushings and filtration gaskets using advanced CNC precision turned components lines and Traub automatic lathes at our Bhayandar, Mumbai facility — supported by full CNC machining infrastructure and inspection capability — achieving bore tolerances as tight as ±0.005mm and surface finishes up to Ra 0.4.

Common Applications of SS Sealing Bushings:

  • Oil & Gas Industry: Wellhead valve packing, pipeline seal assemblies, subsurface pump housings
  • Hydraulic Systems: Cylinder rod seals, valve stem bushings, manifold sealing interfaces
  • Pharmaceutical Equipment: Reactor vessel shaft seals, sterile process piping, GMP-compliant pump housings
  • Chemical Processing: Corrosion-resistant shaft bushings in aggressive media environments
  • Automotive & Heavy Engineering: Gearbox bushings, suspension sealing, brake system components

Common Applications of Filtration Gaskets:

  • Water Treatment Plants: Filter housing seals, membrane support gaskets, pressure vessel closures
  • Food & Beverage Processing: Sanitary strainer gaskets, CIP-compatible filter seals
  • Industrial Filtration: Air filter housings, oil filter assemblies, hydraulic filter cartridge end-seals
  • Pharmaceutical Manufacturing: Sterile filtration assemblies, bioprocess filter holders
  • HVAC Systems: Air handler unit filter seals, duct connection gaskets

Why Choose Stainless Steel for Sealing & Filtration Components?

Stainless steel — particularly SS 316L — offers exceptional corrosion resistance in chloride-rich environments, excellent machinability for tight-tolerance bores and perforations, high tensile strength at elevated temperatures, and full compliance with FDA, USP, and EU food-contact material standards. This makes it the preferred material over brass or MS for pharmaceutical, food-grade, marine, and chemical applications.

Technical Details

SS Sealing Bushing & Filtration Gasket — Specifications

Sealing Bushing Specifications

Materials Available SS 304, SS 316, SS 316L, SS 410, Duplex SS 2205
Manufacturing Process CNC Turning, Traub Auto Lathe, Internal / External Grinding
Outer Diameter Range 8 mm to 120 mm
Bore Diameter Range 5 mm to 100 mm (custom available)
Length Range 5 mm to 200 mm
Tolerance Capability ±0.005mm bore | ±0.008mm OD (H6/h6, H7/g6)
Surface Finish (ID) Ra 0.4 to Ra 1.6 μm
Threading Options BSP, NPT, Metric (M6–M60), Custom thread forms
Sealing Standard DIN 3869, ISO 228, SAE J514 compatible
Pressure Rating Up to 700 bar (tested per application)
Quality Standards ISO 2768-m, First Article Inspection, Dimensional Reports

Filtration Gasket Specifications

Materials Available SS 304, SS 316L, SS 321, Hastelloy (on request)
Manufacturing Process CNC Turning, Laser / Punch Perforation, Wire EDM
Outer Diameter Range 10 mm to 300 mm
Gasket Thickness 0.5 mm to 10 mm
Perforation Dia. Range 0.5 mm to 8 mm (custom patterns available)
Tolerance Capability ±0.01mm OD | ±0.05mm hole pitch
Surface Finish 2B Mill / Electropolished / Mirror Polish (Ra 0.2)
Profile Options Flat ring, O-ring grooved, Kammprofile, Spiral wound
Certifications Available EN 10204 3.1 Mill Test Certificate, CoC, FAI
Temperature Range -200°C to +800°C (grade dependent)
Production Volume Prototype (50 pcs) to Mass Production (100,000+ pcs)
Our Expertise

How We Manufacture SS Sealing Bushings & Filtration Gaskets

01
Raw Material Procurement & Traceability

Certified SS 304 / 316 / 316L bar stock and plate sourced from SAIL, Jindal, and accredited mills with EN 10204 3.1 Material Test Certificates. Full heat number traceability maintained throughout production.

02
Incoming Material Inspection

Chemical composition verified via spectrometer analysis. Dimensional checks on bar OD. Hardness verification before machining begins. Rejected material quarantined immediately.

03
CNC Turning & Traub Machining

Sealing bushings rough-turned on CNC turning centres, followed by finish turning on Traub automatic lathes for bore and OD. Precision boring bars used for tight-tolerance ID features. Live tooling for cross-holes and slots.

04
Perforation & Profile Machining (Gaskets)

Filtration gaskets profiled via CNC turning. Perforation patterns executed via CNC punching or laser cutting. Wire EDM used for micro-perforations and irregular slot geometries. All holes deburred via vibratory finishing.

05
Secondary Operations — Threading, Grooving, Plating

BSP / NPT / Metric threads cut on thread-rolling or single-point threading.O-ring grooves cut to DIN 3869 standard and manufactured alongside our custom engineered CNC components for hydraulic and process equipment assemblies. Electropolishing available for pharma/food-grade components. Passivation per ASTM A967 on request.

06
Final Inspection & Dimensional Reporting

100% dimensional inspection on CMM for critical dimensions. Bore gauge checks on every sealing bushing. Profile projector verification on gasket perforations. Full dimensional report provided with each shipment.

Machines & Equipment

  • 5× Traub Automatic Lathes (Ø4–Ø42mm)
  • CNC Turning Centres with live tooling
  • Internal cylindrical grinding machines
  • CMM (Coordinate Measuring Machine)
  • Surface roughness tester (profilometer)
  • Bore gauges – calibrated to 0.001mm

Quality Control

  • First Article Inspection (FAI) with report
  • In-process CMM dimensional checks
  • Pressure leak test capability (up to 700 bar)
  • Electropolish surface verification Ra 0.2
  • 100% visual inspection before packing
  • EN 10204 3.1 MTCs on all SS grades
Material Options

Material Grades for SS Sealing & Filtration Components

Stainless Steel SS 304 (Grade 1.4301)

Properties: Austenitic, non-magnetic, excellent corrosion resistance in mild environments, good weldability, food-safe surface finish achievable.

Best For: General industrial filtration gaskets, hydraulic sealing bushings, water treatment filter seals, food equipment gaskets.

Standards:

AISI 304 DIN 1.4301 EN 10088 IS 6911

Stainless Steel SS 316 / 316L (Grade 1.4401/1.4404)

Properties: Molybdenum-enhanced corrosion resistance, superior performance in chloride and marine environments, low carbon (316L) ideal for welded assemblies and pharmaceutical contact.

Best For: Pharmaceutical sealing bushings, marine filtration gaskets, chemical plant components, oil & gas wellhead seals.

Standards:

AISI 316 DIN 1.4401 ASTM A276 FDA Compliant

Duplex Stainless Steel (SS 2205)

Properties: Combined austenitic-ferritic structure, double the yield strength of SS 316, exceptional resistance to stress corrosion cracking and pitting in aggressive environments.

Best For: Offshore oil & gas sealing bushings, desalination filtration gaskets, high-pressure hydraulic components.

Standards:

UNS S32205 DIN 1.4462 NACE MR0175

SS 410 / Martensitic Grades

Properties: Hardenable via heat treatment, good wear and abrasion resistance, moderate corrosion resistance. Suitable for high-wear sealing applications where hardness is critical.

Best For: Valve seat bushings, high-wear industrial filter components, pump shaft sealing sleeves requiring surface hardness.

Standards:

AISI 410 DIN 1.4006 ASTM A276
Applications

Industries Using Our SS Sealing Bushings & Filtration Gaskets

Oil & Gas

Wellhead valve sealing bushings, pipeline gaskets, subsurface pump shaft sleeves, flange sealing components

Pharmaceutical

GMP-compliant reactor shaft seals, sterile filtration gaskets, bioreactor vessel sealing bushings, cleanroom-ready components

Water Treatment

Filter housing seals, reverse osmosis membrane gaskets, desalination plant components, sewage treatment filter seals

Hydraulics & Pneumatics

Cylinder rod sealing bushings, valve stem sleeves, manifold block sealing interfaces, accumulator components

Food & Beverage

Sanitary strainer gaskets, CIP/SIP-compatible filter seals, FDA-compliant bushing assemblies, dairy processing components

Chemical Processing

Corrosion-resistant shaft bushings in acid/alkali environments, reactor vessel sealing, agitator shaft sleeves

Automotive

Transmission shaft bushings, brake system sealing, hydraulic power steering components, fuel system gaskets

Marine & Defence

Salt-water resistant sealing bushings, submarine hull seals, naval vessel filtration gaskets, offshore platform components

Product Comparison

OM Engineering vs Alternative Suppliers

Feature / Capability OM Engineering Works Typical Indian Supplier Off-the-Shelf Import
Bore Tolerance ±0.005mm ±0.02 – 0.05mm ±0.01 – 0.02mm
Material Grades SS 304, 316, 316L, Duplex, 410 SS 304 only Standard grades only
Custom Profiles Fully Custom to Drawing Limited options Standard sizes only
MOQ 50 pieces (prototypes welcome) 500–1000 pieces 5000+ pieces
Material Test Certificate EN 10204 3.1 MTC Provided Basic mill cert Variable
Surface Finish Ra 0.4 (Electropolish available) Ra 1.6 standard Ra 0.8 standard
Lead Time (Sample) 7–10 working days 15–25 days 45–90 days
Dimensional Report Full CMM report per batch Rarely provided On request (extra cost)
Common Questions

SS Sealing Bushing & Filtration Gasket — FAQs

An SS sealing bushing is a precision cylindrical sleeve manufactured from stainless steel, inserted between a rotating shaft and a housing bore to provide a low-friction, leak-resistant seal. It works by maintaining precise diametral clearances (typically H7/g6 or H6/h6 fit) between the bore ID and the shaft OD, preventing fluid, gas, or particulate from migrating through the clearance. In dynamic sealing applications, it is often combined with O-rings or lip seals in a gland groove. The stainless steel construction ensures the bushing withstands corrosion from hydraulic fluids, process chemicals, or water without degrading the sealing performance.

SS 304 is the general-purpose grade — excellent for mild corrosive environments, water, food, and most industrial media. It is 18% chromium and 8% nickel. SS 316 adds 2–3% molybdenum which significantly improves resistance to chlorides, marine environments, and acidic media. For sealing bushings in pharmaceutical reactors, coastal/marine installations, chemical plants, or any chloride-rich environment, SS 316 or SS 316L (low-carbon for welding) is strongly recommended. For most standard hydraulic or water applications, SS 304 offers a cost-effective solution without compromising quality.

Pricing for SS sealing bushings depends on material grade (SS 304 vs 316 vs Duplex), dimensions (OD/ID/length), tolerance requirements, surface finish specification, and order quantity. As a general guide, standard SS 304 bushings in moderate quantities (500–1000 pcs) are significantly more economical than SS 316L or Duplex grades. We encourage you to share your drawing or specification via our quote form or WhatsApp — we provide detailed quotations within 24–48 hours with no obligation. Volume pricing available for orders above 1000 pieces.

A filtration gasket serves a dual function: it seals the interface between mating filter housing faces (primary sealing function) while also acting as a flow-control element via its precision-perforated or profiled geometry. Unlike a standard flat gasket which simply prevents leakage, a filtration gasket has engineered holes, slots, or a mesh-like pattern that allows fluid to pass through at a controlled rate while retaining particulates above a specific micron rating. The perforation pattern (diameter, pitch, and arrangement) is designed to the specific flow rate and filtration efficiency required by the system.

Yes — 100% custom manufacturing to your drawing or sample is our core service. We accept 2D drawings (PDF, DXF, DWG), 3D models (STEP, IGES), or physical samples for reverse engineering. Our engineering team reviews your drawing and provides a DFM (Design for Manufacturability) feedback if any features could be optimized for cost or machining. We manufacture first article samples with a full dimensional inspection report for your approval before batch production begins.

For pharmaceutical, biotech, and food-grade applications, we offer: Electropolishing (achieves Ra ≤0.4 μm, eliminates micro-crevices where bacteria can harbour), Passivation per ASTM A967 (removes free iron from the surface for enhanced corrosion resistance), Mechanical Polishing (Ra 0.4–0.8 μm for internal bores), and standard 2B Mill Finish for non-critical surfaces. All pharmaceutical-grade components are supplied with material traceability certificates and surface finish measurement reports.

Yes, OM Engineering Works regularly exports precision sealing components to the USA, UK, Germany, UAE, Saudi Arabia, Singapore, Australia, and other markets. We have experience with export documentation requirements including FORM-A (for GSP countries), phytosanitary certificates (where required), commercial invoice, packing list, and certificate of origin. Our components are packed to international export standards with individual component protection to prevent transit damage. Lead times for export orders range from 10–21 working days depending on quantity.

Our minimum order quantity starts from 50 pieces for sealing bushings and filtration gaskets, making us suitable for R&D prototyping, product development, and small-batch production as well as high-volume manufacturing. We accept prototype orders as low as 10–25 pieces for engineering validation samples — please mention "prototype" when requesting a quote. Volume discounts apply at 500, 1000, 5000, and 10,000 piece tiers.

A precision filtration gasket prevents bypass leakage through three mechanisms: (1) The outer flat sealing face compresses against the filter housing flanges under bolt load, creating a metal-to-metal or elastomer-assisted seal that blocks fluid from bypassing around the gasket OD. (2) The inner bore is sized and tolerance-controlled to eliminate clearance against the filter element's end cap, preventing unfiltered fluid from passing through the annular gap. (3) The perforation pattern is designed to distribute flow evenly across the filter element face, preventing channelling and maintaining consistent ΔP across the element. Correct gasket bolt torque is critical — we can advise on optimum values for your assembly.

We provide: EN 10204 3.1 Material Test Certificate (chemical composition + mechanical properties from the mill), First Article Inspection (FAI) Report with full dimensional measurements, Certificate of Conformance (CoC) stating the order meets the specified drawing and standard, Passivation Certificate (if applicable per ASTM A967), Electropolish Report with Ra values (for pharma/food-grade components), and Pressure Test Certificate (on request for sealing bushings in pressure-retaining service). All documents are available in digital format (PDF) on the day of shipment.
Related Capabilities

Explore Our CNC Machining & Sealing Component Services

Precision Turned Components

CNC turned shafts, sleeves, bushings, and sealing components manufactured to tight tolerance for OEM industries.

Traub Machining Job Work

High-volume automatic lathe production for sealing bushings, valve sleeves, and hydraulic components.

Custom Engineered CNC Components

Fully custom machined stainless steel components manufactured from drawing or sample with full dimensional reporting.

Ready to Order SS Sealing Bushings & Filtration Gaskets?

Share your drawing or specification — receive a detailed quote within 24 hours. Minimum 50 pieces. Export-ready. EN 10204 3.1 MTCs provided. Mumbai-based manufacturing, globally delivered.

Upload Drawing WhatsApp Quote +91 9324078101

Contact Info

24/A, Shreenath IND Estate, Navghar Rd, Bhayandar(E), 401105

+91 9324078101

omeprecisions@gmail.com

Mon - Sat: 09:00 AM - 09:00 PM

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