This medium backcap fits 9/20 style TIG torches from multiple 2 series models, including CK9, CK20, WP-9, and WP-20. It features an O-ring to ensure a secure, leak-free seal, which is critical for maintaining gas flow and protecting your tungsten electrode. The backcap also guarantees proper tungsten clamping and torch performance under demanding welding conditions.Features: O-ring seal prevents gas leaks during operation Compatible with a broad range of CK and WP TIG torch models Ensures stable tungsten electrode positioning Durable construction designed for regular industrial use Available in packs of 2, 3, or 5 for convenience Specifications: Part Number=41V35 (alternate 200M) Fits 9/20 style TIG torches (2 series) Compatible Models=CK9, CK20, WP-9, WP-20, TL9, TL20, CK100, CK110, CK130, CK200, CK230, FL2L, CKM230, CWH230, CWM230, CK25 Standard Gas Saver Quantity: Sold in packs of 2, 3, or 5 O-ring seal for leak prevention Fits multiple 9/20 style TIG torch models Secures tungsten electrode reliably Built to withstand frequent shop use Available in multiple pack sizes