AS568-121 O-Ring
Standard Aerospace Size O-Ring | SAE AS568B
Dimensions (Imperial)
| Inner Diameter (ID) | 1.049" ±0.005" |
| Cross Section (CS) | 0.103" ±0.003" |
| Outer Diameter (OD) | ~1.255" |
Dimensions (Metric)
| Inner Diameter (ID) | 26.64 mm |
| Cross Section (CS) | 2.62 mm |
| Outer Diameter (OD) | ~31.88 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-121 |
Frequently Asked Questions
What are the dimensions of AS568-121?
AS568-121 has an Inner Diameter (ID) of 1.049" (26.64mm) and Cross Section (CS) of 0.103" (2.62mm).
What materials are available for AS568-121?
Common materials include Nitrile (NBR), Viton (FKM), EPDM, and Silicone. See our material guide for selection help.