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Specialty O-Rings for Critical Sealing Applications

Specialty O-Rings for Critical Sealing Applications

Certified and application-specific sealing compounds for pharmaceutical, food, chemical, oil and gas, fuel, high-temperature, high-pressure and aggressive-media applications. Supplied worldwide from Mumbai and Dubai.

O-Ring Dimensions - ID and CS diagram
9
Specialty Material Lines
Global
Industrial & OEM Supply
Mumbai
& Dubai Service Points
Metric
& Inch Size References
Product Types

O-rings, cords and kits — every configuration.

O-Rings

Precision-molded circular seals available across FITCO's full specialty material range.

Explore O-Rings →

Cords

Extruded cord stock in FKM and Silicone — cut, spliced and vulcanized to size.

Explore Cords →

O-Ring Kits

Application-specific seal kits in FKM and Silicone, bundled to equipment BOM or drawing.

Explore O-Ring Kits →
Specialty Materials

Application-Specific Sealing Compounds

Tell us the fluid, temperature, pressure, movement and required certification. FITCO will help identify a suitable O-ring material and compound.

FFKM

The highest chemical inertness available in an elastomer seal.

View FFKM →

FEPM

A specialist choice when standard FKM is unsuitable for steam, amine or alkaline service.

View FEPM →

HNBR AED/RGD

Certified AED/RGD-resistant HNBR as a premium gas-service niche.

View HNBR AED/RGD →

Specialty FKM

One FKM compound is not suitable for every application.

View Specialty FKM →

FVMQ

Silicone-like low-temperature flexibility with improved hydrocarbon and fuel resistance.

View FVMQ →

Pharma Silicone

Platinum-cured, FDA and USP Class VI compliant sealing for regulated environments.

View Pharma Silicone →

Pharma EPDM

FDA-compliant and USP Class VI EPDM for hygienic process equipment.

View Pharma EPDM →

FDA/USP FKM

Fluoroelastomer chemical resistance with documented food and pharma compliance.

View FDA/USP FKM →

FEP/PFA Encapsulated

A seamless FEP or PFA jacket over an elastomer core for near-universal chemical resistance.

View FEP/PFA Encapsulated →
Industries Served

Critical-Service Industries

Pharmaceutical & Biotech

CIP/SIP process equipment, bioreactors and aseptic filling systems requiring documented FDA/USP Class VI compliant sealing.

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Food, Beverage & Dairy

Hygienic processing equipment for food, beverage and dairy production requiring FDA-compliant and food-contact certified sealing.

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Chemical Processing

Reactor vessels, pumps and transfer lines handling acids, solvents and caustics requiring chemically inert sealing.

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Oil & Gas

Wellhead, valve and downhole sealing requiring resistance to sour gas, hydrocarbon swell and high differential pressure.

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Natural Gas / CNG / Compressors

High-pressure gas service and compressor sealing requiring anti-explosive and rapid-gas-decompression resistant compounds.

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Valve & Pump

Valve stem, bonnet and pump seal positions across general industrial and process service.

Learn more →
View all industries →
The Problem

Why General-Purpose O-Rings Fail

Chemical Attack

The wrong elastomer for the process fluid softens, swells or embrittles — often within a single duty cycle.

Excessive Temperature

Standard compounds stiffen, crack or lose compression set retention outside their rated temperature window.

Rapid Gas Decompression

Absorbed gas trapped in the elastomer expands violently on rapid depressurization, blistering or rupturing an unsuitable compound.

Swelling

Incompatible fluids cause the elastomer to swell, distorting the seal and reducing service life.

Compression Set

The seal permanently thins under load and loses contact force — the most common long-term failure mode.

Low-Temperature Hardening

Standard compounds lose flexibility in cold service, reducing sealing force and increasing leak risk.

Incorrect Compound Selection

Choosing by material family alone (e.g. "FKM") without matching the specific compound to fluid, temperature, pressure and movement.

Why FITCO

An Application-Led Approach to Sealing

Application-Based Material Selection

Material recommendations are built from your fluid, temperature, pressure, movement and certification requirements — not assumed from the material family name alone.

Special & Certified Compounds

Access to FFKM, FEPM, AED/RGD-resistant HNBR, FDA/USP-compliant grades and encapsulated constructions beyond standard catalog elastomers.

International Sizes

AS568, ISO 3601, BS, DIN, JIS and metric size references, plus custom and drawing-based requirements.

Documentation & Traceability

Certificates of Conformance and compound-specific documentation provided where available and verified.

Standard & Custom Sizes

Catalog sizing alongside custom and drawing-spec manufacturing for legacy and OEM-specific equipment.

OEM, Maintenance & Breakdown Support

Support for OEM production requirements, planned maintenance turnarounds and urgent breakdown sourcing.

Process

Five-Step Enquiry Process

1

Share Your Conditions

Tell FITCO the fluid, temperature, pressure, movement and any required certification for your application.

2

FITCO Reviews

Our technical team reviews the application details against FITCO's specialty material range.

3

Material Proposed

A suitable material/compound is proposed, subject to technical confirmation.

4

Documentation & Availability Confirmed

Compound documentation, certification scope and availability are confirmed.

5

Quotation Submitted

A formal quotation is submitted covering material, sizing, quantity and delivery.

FAQ

Common Questions

FITCO Orings Pvt. Ltd. (Mumbai, India) and FITCO Orings Trading LLC (Dubai, UAE) supply O-rings, oil seals, hydraulic seals, pneumatic seals, PTFE products, seal kits and customised sealing components, sourcing and supplying specialty compounds for critical applications.

Yes — FITCO supports worldwide industrial, OEM and distributor enquiries from its Mumbai and Dubai service and supply locations, in metric and inch sizes.

Share your fluid, temperature, pressure, movement and certification requirements via the enquiry form. FITCO's technical team will review and propose a suitable material, subject to confirmation.

Yes — share your drawing, existing part number, or current seal material and failure history, and FITCO will cross-reference to a suitable specification.

View all FAQs →

Tell Us Your Application

Fluid, temperature, pressure, movement and required certification — FITCO will help identify a suitable O-ring material and compound.

Send Your Application Details