This O-Ring, with 15.88 mm I.D. and 3.18 mm O.D., is for use with ELAN® and NexION® 300/350 ICP-MS series instruments. It is a large external O-ring designed for the Cassette torch type.
This O-ring is included in the ELAN Cassette O-Ring Kit for Injector Support for ELAN (N8120100) and the Injector Adapter Kit for NexION 300/350 (N8140527).