Rubber Seals and O-Rings
NBR HNBR EPDM FKM and FFKM, plus Y seals and the full AS568 size range.
Nine sealing products organised by the only thing that actually decides seal life: material. NBR for oil and fuel, HNBR for cold media and automotive power steering, EPDM for water, steam, brake fluid and refrigerants, FKM for acids, hydraulic fluids and heat, and FFKM for semiconductor, pharmaceutical and chemical processes that defeat everything else. Y seals cover reciprocating dynamic duty, and the AS568 series covers standard sizes with every mould held.
The range
All 9 Products In This Group
The problem
What This Group Is Built To Solve
Almost every seal failure traces back to material selection rather than to dimensions. An NBR O-ring in brake fluid swells, an EPDM O-ring in mineral oil swells, and both were the right size. The useful question is never which seal but which elastomer, and that requires the fluid, the temperature and the cleaning chemistry in one place.
Who buys these
Who This Range Is For
Hydraulic and Pneumatic Equipment Makers
O-rings for static duty and Y seals for reciprocating rods and pistons, with lip geometry defined by inner and outer lip ratio, cross-section, lip angle and height.
Automotive and Aerospace Suppliers
NBR for oil and fuel, HNBR for power steering and oil seals, EPDM for brake systems, FKM and FFKM for high-temperature engine and fuel components.
Semiconductor Pharmaceutical and Chemical Plants
FFKM is bought because a failed seal contaminates a batch worth far more than the seal, not because of its price.
Why these
What Makes This Range Different
Five Elastomer Families From One Supplier
NBR, HNBR, EPDM, FKM and FFKM means the specification can be stepped up only where it needs to be, instead of applying an expensive material across a whole machine.
All AS568 Moulds Held
Standard American sizes are supplied promptly rather than tooled to order, which is the difference between a two-week and a two-month delivery.
Y Seal Geometry Defined Properly
Lip ratio, cross-section, lip angle and height, with hole and shaft variants of every type. None of those appear in a part number, and all four decide whether a lip seal seals.
Custom Sizes and Profiles
Where no standard covers the groove, the seal is made to your dimensions rather than the groove being remachined to suit a catalogue part.
Application
Where These Products Are Used
- Hydraulic cylinder rod and piston sealing
- Automotive fuel, brake and power steering systems
- Water filtration housings and plumbing systems
- Refrigeration and HVAC coolant sealing
- Semiconductor and pharmaceutical process equipment
- Replacing worn seals in existing machinery
Documentation
Downloads Covering This Group
Specification sheet PDFs already on file for products in this range.
- Rubber Seals and Plastics · Rubber Seals and O-Rings Specification Sheet20.5 KB
- Catalogue · Full Product Catalogue154.0 KB
- Rubber Seals and Plastics · Rubber Seals and O-Rings Specification Sheet20.5 KB
- Catalogue · Full Product Catalogue154.0 KB
- Rubber Seals and Plastics · Rubber Seals and O-Rings Specification Sheet20.5 KB
- Catalogue · Full Product Catalogue154.0 KB
- Rubber Seals and Plastics · Rubber Seals and O-Rings Specification Sheet20.5 KB
- Catalogue · Full Product Catalogue154.0 KB
- Rubber Seals and Plastics · Rubber Seals and O-Rings Specification Sheet20.5 KB
- Catalogue · Full Product Catalogue154.0 KB
- Rubber Seals and Plastics · Rubber Seals and O-Rings Specification Sheet20.5 KB
- Catalogue · Full Product Catalogue154.0 KB
Industries
Sectors That Specify This Group
Metal Fabrication and Machine Shops
Custom parts, tooling and the cranes that move them around the shop.
Warehousing and Heavy Industry
Lifting from 250 kg to 360 tons, indoors on a runway or outdoors on legs.
Food Packaging Lines
Depalletizing to palletizing, balanced against the filler in the middle.
Further reading
Guides Related To This Group
Selecting an O-Ring Material NBR EPDM FKM or FFKM
Almost every seal failure is a material selection error rather than a dimensional one. The fluid and the temperature decide the elastomer, and the size is the easy part.
FAQ
Rubber Seals and O-Rings Questions
Which elastomer should we specify?
NBR for oils and fuels, EPDM for water, steam and brake fluid, HNBR for cold media, FKM for acids and high temperature, FFKM where FKM is still attacked. Send the fluid and temperature.
Do you hold standard sizes?
All the moulds for the AS568 O-ring size range are held, so standard parts are supplied promptly.
Can you match an existing seal?
Yes. Send the old seal or the groove dimensions and the size and profile are matched.
What is the difference between a hole and a shaft Y seal?
The lip orientation. A hole type seals against a bore, a shaft type against a rod, and they are not interchangeable.
Can you make custom sizes?
Yes. Send inside diameter, cross-section, material requirement and operating conditions.
What quantities do you supply?
From maintenance quantities through to production volumes. State your annual usage for a tiered price.
Get A Quotation On Rubber Seals and O-Rings
Send the capacity you need, the products it will handle and the destination, and we will confirm configuration, materials and a container plan.