EPDM O-ring
O-Ring 81.91 × 6.99 mm · EPDM · 70A
- ID81.91 mm3.225 in
- CS6.99 mm0.275 in
- MaterialEPDM
- Hardness70 Shore A
OXXRING SKU OXX-OR-81P91-6P99-EPDM-70A-P10
Same size, other grades
Compare every grade at this size →$3.43 per piece
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Standard items: returns per our Refund Policy. Custom items are made to order.
Specifications
| Inside diameter (ID) | 81.91 mm · 3.225 in |
|---|---|
| Cross section (CS) | 6.99 mm · 0.275 in |
| Material family | EPDM |
| Hardness | 70 Shore A |
| OXXRING SKU | OXX-OR-81P91-6P99-EPDM-70A-P10 |
| Ordering | Buy online |
Check this size for your application
Free engineering tools, already filled in with 81.91 × 6.99 mm EPDM.
Same size, other materials and hardness
Identical nominal ID × CS. Material and hardness change suitability; check the fluid and temperature before switching.
| Size | Material | Size reference | Smallest pack | Ordering | Action |
|---|---|---|---|---|---|
| 81.91 × 6.99 mm3.225 × 0.275 in | NBR 70A | — | $13.52 / 10 pcs $1.35 / pc | Available to order | Choose pack |
| 81.91 × 6.99 mm3.225 × 0.275 in | FKM 80A | — | $51.59 / 8 pcs $6.45 / pc | Available to order | Choose pack |
| 81.91 × 6.99 mm3.225 × 0.275 in | Silicone 70A | — | $45.02 / 10 pcs $4.50 / pc | Available to order | Choose pack |
| 81.91 × 6.99 mm3.225 × 0.275 in | FFKM 80A | — | $383.32 / pc $383.32 / pc | Available to order | Choose pack |
Nearby listed sizes
For comparison only. A nearby size is not an equivalent; confirm the gland dimensions or ask for a review before substituting.
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 81.91 × 6.99 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.