EPDM O-ring · JIS B 2401 P20 size reference

O-Ring 19.80 × 2.40 mm · EPDM · 70A

  • ID19.80 mm0.780 in
  • CS2.40 mm0.094 in
  • MaterialEPDM
  • Hardness70 Shore A

OXXRING SKU OXX-OR-19P8-2P4-EPDM-70A-P10

O-Ring 19.80 × 2.40 mm · EPDM · 70A
Representative image. Colour can differ by compound.
ID 19.80 mm CS 2.40 mm SECTION
Nominal dimensions. Drawing is proportional, not to scale.

Same size, other grades

Compare every grade at this size →
Available to order
$4.99for 10 pcs

$0.50 per piece

1 pack × 10 pcs = 10 pieces · $4.99

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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)19.80 mm · 0.780 in
Cross section (CS)2.40 mm · 0.094 in
Material familyEPDM
Hardness70 Shore A
Size referenceJIS B 2401 P20
OXXRING SKUOXX-OR-19P8-2P4-EPDM-70A-P10
OrderingBuy online
Check chemical compatibility for EPDM Check this size in a groove

Check this size for your application

Free engineering tools, already filled in with 19.80 × 2.40 mm EPDM.

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
19.80 × 2.40 mm0.780 × 0.094 in NBR 70A JIS B 2401 P20 $4.99 / 10 pcs $0.50 / pc Available to order Choose pack
19.80 × 2.40 mm0.780 × 0.094 in FKM 80A JIS B 2401 P20 $5.01 / 10 pcs $0.50 / pc Available to order Choose pack
19.80 × 2.40 mm0.780 × 0.094 in FFKM 75A JIS B 2401 P20 $109.89 / 3 pcs $36.63 / pc Available to order Choose pack
19.80 × 2.40 mm0.780 × 0.094 in Silicone 70A JIS B 2401 P20 Quoted on request Quote required Request quote

EPDM material notes

Usually a good starting point for

Ozone/weathering, inorganic acids, alkalis, phosphate esters and many polar-fluid services.

Review before use with

Mineral oils and fuels are not default EPDM service; hot-water and steam use remains condition-dependent.

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 19.80 × 2.40 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.

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.

Historical customer feedback

Customer review for this product

★★★★★
“Great price and smaller quantities available fast shipping”

William Delorie ·

Historical review collected on OXXRING through our previous review system. Original wording is preserved; contact details are not displayed.

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