FKM O-ring · JIS B 2401 P320 size reference
O-Ring 319.50 × 8.40 mm · FKM · 80A
- ID319.50 mm12.579 in
- CS8.40 mm0.331 in
- MaterialFKM
- Hardness80 Shore A
OXXRING SKU OXX-OR-319P5-8P4-FKM-80A-P2
$34.11 per piece
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Standard items: returns per our Refund Policy. Custom items are made to order.
Specifications
| Inside diameter (ID) | 319.50 mm · 12.579 in |
|---|---|
| Cross section (CS) | 8.40 mm · 0.331 in |
| Material family | FKM |
| Hardness | 80 Shore A |
| Size reference | JIS B 2401 P320 |
| OXXRING SKU | OXX-OR-319P5-8P4-FKM-80A-P2 |
| Ordering | Buy online |
Check this size for your application
Free engineering tools, already filled in with 319.50 × 8.40 mm FKM.
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 |
|---|---|---|---|---|---|
| 319.50 × 8.40 mm12.579 × 0.331 in | NBR 70A | JIS B 2401 P320 | $65.22 / 10 pcs $6.52 / pc | Available to order | Choose pack |
| 319.50 × 8.40 mm12.579 × 0.331 in | FFKM 75A | JIS B 2401 P320 | $1,612.29 / pc $1,612.29 / 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.
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 319.50 × 8.40 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.