FKM O-ring · BS1806-801 size reference

O-Ring 3.17 × 1.78 mm · FKM · 80A

  • ID3.17 mm0.125 in
  • CS1.78 mm0.070 in
  • MaterialFKM
  • Hardness80 Shore A

OXXRING SKU OXX-OR-3P17-1P78-FKM-80A-P10

O-Ring 3.17 × 1.78 mm · FKM · 80A
Representative image. Colour can differ by compound.
ID 3.17 mm CS 1.78 mm SECTION
Nominal dimensions. Drawing is proportional, not to scale.

Same size, other grades

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Engineering review

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The size and material of this listing are already filled in. Add the quantity and, if you can, the application and a drawing or photo.

How your quote is builtProduct cost and standard shipping. Rush production, expedited shipping and tooling only if needed, each on its own line.
Quote lines
  1. Product cost
  2. Standard shipping
  3. Rush production fee if requested
  4. Expedited shipping fee if requested
  5. Tooling / mold fee if a new mold is needed
  6. Special certification / testing fee if requested
Tooling / mold fee
Custom products that require new tooling or molds may incur a one-time tooling charge. Tooling requirements and fees will be confirmed before the order is finalized.
Rush production
Rush tooling and production are available on request. For a new mold, the standard tooling-and-production time is 13 days; rush service can be as fast as 7 days, subject to factory confirmation. Rush charges depend on the specification, quantity and schedule, and are quoted separately from shipping.
Expedited shipping
Expedited shipping or priority delivery options may be available upon request. Additional shipping charges will apply based on destination, package size, weight, carrier, service level and required delivery time. Faster shipping speeds up transit only, not production.
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Standard items: returns per our Refund Policy. Custom items are made to order.

Specifications

Inside diameter (ID)3.17 mm · 0.125 in
Cross section (CS)1.78 mm · 0.070 in
Material familyFKM
Hardness80 Shore A
Size referenceBS1806-801
OXXRING SKUOXX-OR-3P17-1P78-FKM-80A-P10
OrderingEngineering review
Check chemical compatibility for FKM Check this size in a groove

Check this size for your application

Free engineering tools, already filled in with 3.17 × 1.78 mm FKM.

Engineer ProRod, piston, face or dynamic seal: squeeze, extrusion and pressure for this exact ring Material selectorMedia, temperature and pressure to the right family Size cross-referenceThis size in AS568, JIS and BS terms CalculatorsWeight, cord length and stretch

Same size, other materials and hardness

Identical nominal ID × CS. Material and hardness change suitability; check the fluid and temperature before switching.

SizeMaterialSize referenceSmallest packOrderingAction
3.17 × 1.78 mm0.125 × 0.070 in NBR 90A BS1806-801 Quoted on request Confirm availability Request quote
3.17 × 1.78 mm0.125 × 0.070 in EPDM 70A BS1806-801 Quoted on request Confirm availability Request quote
3.17 × 1.78 mm0.125 × 0.070 in Silicone 70A BS1806-801 Quoted on request Confirm availability Request quote
3.17 × 1.78 mm0.125 × 0.070 in FFKM 75A BS1806-801 Quoted on request Confirm availability Request quote

FKM material notes

Usually a good starting point for

Mineral oils, hydraulic fluids, gasoline, many hydrocarbons, ozone/weathering and selected vacuum-service conditions.

Review before use with

Review steam, glycol brake fluid, alkalis, amines/ammonia, organic acids and demanding dynamic service.

Family-level screening, not an approval of a specific compound. Screen a chemical or ask for a material check.

Questions about this O-ring

How do I confirm this is the right size?

Measure the inside diameter and the cross section of the ring you are replacing, or read them from the drawing. This listing is 3.17 × 1.78 mm. For a used ring, measure in several places; wear and swelling change the dimensions. Measurement guide

How do I get a price for this size?

Send the quantity you need and your application through the request form. The offer lists the product cost, shipping and any optional charges separately, and nothing is charged until you accept it.

Is the size reference a certification?

No. A size reference such as AS568 or ISO 3601 describes nominal dimensions. It does not certify the compound or approve the part for a specific application.