Black GM Special High Stretch R-134a #12 Fitting O-Ring OEM #52460742 | Black | AC O-Rings | Air Conditioning Supplies | Service and Repair Parts | Wurth USA
Fundamental of O-Ring
O Ring Basics Handbook - Everything to know about O Rings : Barnwell
How to gently stretch an O-ring for proper fit - YouTube
How to Design an O-Ring Gland: Stretch
O-RING BASICS – Four States Gasket and Rubber, Inc
O-Ring Applications - O-Ring Resources - Rubber Fab