AS568-338 O-Ring
Standard Aerospace Size O-Ring | SAE AS568B
Dimensions (Imperial)
| Inner Diameter (ID) | 3.1" ±0.007" |
| Cross Section (CS) | 0.21" ±0.005" |
| Outer Diameter (OD) | ~3.520" |
Dimensions (Metric)
| Inner Diameter (ID) | 78.74 mm |
| Cross Section (CS) | 5.33 mm |
| Outer Diameter (OD) | ~89.40 mm |
Tolerance Class
Standard AS568B Class 2 tolerances apply. For critical applications requiring tighter tolerances, specify Class 1 when ordering.
Cross Reference
| BS 1806 (British) | BS-338 |
Frequently Asked Questions
What are the dimensions of AS568-338?
AS568-338 has an Inner Diameter (ID) of 3.1" (78.74mm) and Cross Section (CS) of 0.21" (5.33mm).
What materials are available for AS568-338?
Common materials include Nitrile (NBR), Viton (FKM), EPDM, and Silicone. See our material guide for selection help.