FFKM O-ring

O-Ring 3.53 × 39.49 mm · FFKM · 75A

  • ID3.53 mm0.139 in
  • CS39.49 mm1.555 in
  • MaterialFFKM
  • Hardness75 Shore A

OXXRING SKU OXX-OR-3P53-39P49-FFKM-75A-P4

O-Ring 3.53 × 39.49 mm · FFKM · 75A
Representative image. Colour can differ by compound.
ID 3.53 mm CS 39.49 mm SECTION
Nominal dimensions. Drawing is proportional, not to scale.

Same size, other grades

  • FFKM 75A
Compare every grade at this size →
Available to order
$102.59for 4 pcs

$25.65 per piece

1 pack × 4 pcs = 4 pieces · $102.59

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  • Price is the total for the pack. Taxes and shipping are calculated at checkout.

Need 1,000+ or a different spec? Bulk quote

Standard items: returns per our Refund Policy. Custom items are made to order.

Specifications

Inside diameter (ID)3.53 mm · 0.139 in
Cross section (CS)39.49 mm · 1.555 in
Material familyFFKM
Hardness75 Shore A
OXXRING SKUOXX-OR-3P53-39P49-FFKM-75A-P4
OrderingBuy online
Check chemical compatibility for FFKM Check this size in a groove

Check this size for your application

Free engineering tools, already filled in with 3.53 × 39.49 mm FFKM.

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

FFKM material notes

Usually a good starting point for

Broad chemical-service screening including aromatic/chlorinated hydrocarbons, ketones, esters, ethers, polar solvents, organic acids, steam and vacuum.

Review before use with

Fluorinated refrigerants and temperature-critical service require exact-compound review.

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 3.53 × 39.49 mm. For a used ring, measure in several places; wear and swelling change the dimensions. Measurement guide

How is the price calculated?

The price shown is the total for one pack. The per-piece price is shown beside it for comparison. Choose how many packs you need; taxes and shipping are calculated at checkout.

Can I order a quantity that is not in the pack list?

Yes. Order several packs, or request a quote for larger or scheduled quantities.