FKM O-ring
O-Ring 87.90 × 5.30 mm · FKM · 90A
- ID87.90 mm3.461 in
- CS5.30 mm0.209 in
- MaterialFKM
- Hardness90 Shore A
OXXRING SKU OXX-OR-87P9-5P3-FKM-90A-P10
Same size, other grades
Compare every grade at this size →$4.13 per piece
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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) | 87.90 mm · 3.461 in |
|---|---|
| Cross section (CS) | 5.30 mm · 0.209 in |
| Material family | FKM |
| Hardness | 90 Shore A |
| OXXRING SKU | OXX-OR-87P9-5P3-FKM-90A-P10 |
| Ordering | Buy online |
Check this size for your application
Free engineering tools, already filled in with 87.90 × 5.30 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 |
|---|---|---|---|---|---|
| 87.90 × 5.30 mm3.461 × 0.209 in | NBR 70A | — | $8.54 / 10 pcs $0.85 / pc | Available to order | Choose pack |
| 87.90 × 5.30 mm3.461 × 0.209 in | EPDM 70A | — | $13.52 / 10 pcs $1.35 / pc | Available to order | Choose pack |
| 87.90 × 5.30 mm3.461 × 0.209 in | Silicone 70A | — | $37.82 / 10 pcs $3.78 / pc | Available to order | Choose pack |
| 87.90 × 5.30 mm3.461 × 0.209 in | FFKM 75A | — | $280.43 / pc $280.43 / 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 87.90 × 5.30 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.