AS568-420 O-Ring
Standard Aerospace Size O-Ring | SAE AS568B
Dimensions (Imperial)
| Inner Diameter (ID) | 3.85" ±0.010" |
| Cross Section (CS) | 0.275" ±0.006" |
| Outer Diameter (OD) | ~4.400" |
Dimensions (Metric)
| Inner Diameter (ID) | 97.79 mm |
| Cross Section (CS) | 6.99 mm |
| Outer Diameter (OD) | ~111.77 mm |
Tolerance Class
Standard AS568B Class 2 tolerances apply. For critical applications requiring tighter tolerances, specify Class 1 when ordering.
Frequently Asked Questions
What are the dimensions of AS568-420?
AS568-420 has an Inner Diameter (ID) of 3.85" (97.79mm) and Cross Section (CS) of 0.275" (6.99mm).
What materials are available for AS568-420?
Common materials include Nitrile (NBR), Viton (FKM), EPDM, and Silicone. See our material guide for selection help.