MSWM27 | Screw Plugs with O-Ring | MISUMI | MISUMI
High Quality Slotted Electr Meter Lead Seal Screw O Ring Socket Self Sealing Screw - China M3 Sealing Screws, M4 Sealing Screw Stainless | Made-in-China.com
Anatomy of an O-Ring Screw - APM Hexseal Corporation