Silicone O-ring · BS1806-867 size reference
O-Ring 139.70 × 5.33 mm · Silicone · 70A
- ID139.70 mm5.500 in
- CS5.33 mm0.210 in
- MaterialSilicone
- Hardness70 Shore A
OXXRING SKU OXX-OR-139P7-5P33-SILICONE-70A-P10
Same size, other grades
Compare every grade at this size →$40.44 per piece
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Standard items: returns per our Refund Policy. Custom items are made to order.
Specifications
| Inside diameter (ID) | 139.70 mm · 5.500 in |
|---|---|
| Cross section (CS) | 5.33 mm · 0.210 in |
| Material family | Silicone |
| Hardness | 70 Shore A |
| Size reference | BS1806-867 |
| OXXRING SKU | OXX-OR-139P7-5P33-SILICONE-70A-P10 |
| Ordering | Buy online |
Check this size for your application
Free engineering tools, already filled in with 139.70 × 5.33 mm Silicone.
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 |
|---|---|---|---|---|---|
| 139.70 × 5.33 mm5.500 × 0.210 in | NBR 70A | BS1806-867 | $14.76 / 10 pcs $1.48 / pc | Available to order | Choose pack |
| 139.70 × 5.33 mm5.500 × 0.210 in | FKM 80A | BS1806-867 | $49.76 / 7 pcs $7.11 / pc | Available to order | Choose pack |
| 139.70 × 5.33 mm5.500 × 0.210 in | EPDM 70A | BS1806-867 | $163.39 / 10 pcs $16.34 / pc | Available to order | Choose pack |
| 139.70 × 5.33 mm5.500 × 0.210 in | FFKM 75A | BS1806-867 | $191.61 / pc $191.61 / 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.
Silicone material notes
Usually a good starting point for
Ozone/weathering and salt-solution service; water service may be considered conditionally.
Review before use with
Review fuels, aromatic/chlorinated hydrocarbons, steam, acids, alkalis and silicone-fluid 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 139.70 × 5.33 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.