Rubber O-Rings
Wayne Rubber manufactures custom rubber o-rings for hydraulic systems, fuel handling, automotive, food processing, medical, and industrial applications. Available in all AS568, ISO 3601, Metric, and JIS B2401 standard sizes as well as fully custom dimensions, across the full range of elastomer compounds sourced through our network of rubber compounders.
Use the free tools below to identify your size and design your gland before requesting a quote.
O-Ring Size Search & Gland Calculator
Wayne Rubber is one of the only rubber manufacturers offering free online tools for o-ring sizing and gland design. Use them to confirm your size and verify groove dimensions before contacting us.
Search 1,400+ standard o-ring sizes across AS568, ISO 3601, Metric, and JIS B2401 by dash number, ID, or cross section. Full tolerances in both inches and millimeters.
Calculate gland depth, groove width, squeeze percentage, and gland fill for piston, rod, and face seal configurations. Covers all five AS568 cross-section series in inches and millimeters.
O-Ring Capabilities
- Standard Sizes: all AS568, ISO 3601, Metric, and JIS B2401 dash numbers stocked and available
- Custom Dimensions: any ID and cross-section combination molded to your drawing
- Compression Molded: cost-effective for standard profiles and medium-to-high volumes
- Injection Molded: tight tolerances and minimal flash for precision sealing applications
- Static & Dynamic: o-rings specified and molded for both static face seals and dynamic reciprocating applications
- High-Volume Runs: production structured to your schedule without minimum order commitments
O-Ring Materials
The right o-ring compound depends on your operating fluid, temperature range, and whether the seal is static or dynamic. Wayne Rubber works with a network of rubber compounders to source the right grade for your application across all major elastomer families.
The most widely used o-ring material. Excellent oil, fuel, and hydraulic fluid resistance for automotive and industrial applications.
Nitrile O-Rings →Widest temperature range of any common o-ring material. FDA and USP Class VI grades available for food processing and medical applications.
Silicone O-Rings →Continuous service to +400°F with outstanding resistance to aggressive fuels, solvents, and chemicals. For environments where NBR falls short.
FKM Seals →Water, steam, brake fluid, and outdoor weathering resistance. The standard choice for water system fittings and non-oil-wetted automotive o-rings.
Water & Steam View EPDM material data →Hydrogenated NBR for elevated-temperature oil service, sour gas exposure, and ozone-present environments where standard NBR falls short.
High-Temp Oil Service View HNBR material data →General-purpose o-ring compound with good ozone, weather, and moderate oil resistance. A balanced choice for refrigerant and HVAC sealing.
General Purpose View CR material data →Not sure which material suits your application? Use Wayne Rubber’s Chemical Resistance and Material Selection Guide to screen compounds against your specific fluid, temperature, and regulatory requirements.
O-Ring Applications
Why Choose Wayne Rubber for O-Rings
- Free Sizing and Gland Design Tools The O-Ring Size Search and Gland Calculator are available at no cost and require no login. Identify your size and verify your groove dimensions before you contact us.
- Standard and Custom Sizes All AS568, ISO 3601, Metric, and JIS B2401 standard sizes are available, as well as fully custom ID and cross-section combinations for non-standard glands or specialty equipment.
- Broad Material Coverage Wayne Rubber’s compounder network gives access to all major elastomer families across the full durometer range, including FDA, USP Class VI, MIL-spec, and AMS-qualified grades.
- Engineering Support Our team reviews your application at the design phase, confirming the right compound grade, gland geometry, and molding process before tooling is committed.
- Consistent Quality Every o-ring batch is dimensionally inspected and verified against material specifications. ASTM D2000, AS568, and ISO 3601 standards are fully supported with documentation available.
Request a Quote for Custom Rubber O-Rings
Provide your size (dash number, ID by cross-section, or drawing), material requirement, and quantity. We will respond with compound recommendations and pricing.