Lock Ring 1 - Piece for T/L Fi

1-piece lock ring for hot tub top-load (T/L) filter housings. Secures the filter canister in place, preventing rotation and maintaining a proper watertight seal during operation. Hand-tighten installation — no tools required. Durable chemical-resistant thermoplastic construction. Compatible with Coast Spas top-load filter systems and other brands using standard T/L filter housings including Hot Spring, Sundance, Master Spas, Cal Spas, and other manufacturers with equivalent filter housing designs. Verify thread type and housing diameter before ordering. Search: hot tub filter lock ring, top load filter retainer ring, T/L filter housing lock ring, spa filter canister lock ring.