mLINE Connecting Collar with Friction O-ring, Multichannel (Sartorius)
Fundamental of O-Ring
Low friction seals for O-ring housings - Epidor SRT
Just Clips - 3/8" Friction Rings and O-Rings for Milwaukee Cordless Tools. Includes The only Patented Friction Ring Installation Tool, The ClipKey, (3 Friction Rings and O Rings): Amazon.com: Tools & Home