108WK (O Ring (Check Cross Compatibility)

Genuine Shimano O-Ring (SKU 108WK) — a precision-molded rubber seal that prevents lubricant leakage and blocks saltwater intrusion at critical junction points inside the reel body. O-rings maintain the sealed environment that protects bearings, drag washers, and gear trains from corrosion and contamination. A dried, cracked, or missing O-ring allows water and grit to infiltrate internal components, accelerating wear and degrading drag performance.
Cross-Compatibility List:
TGT0438 — Shimano Tiagra trolling reels
BNT2429 — Shimano Bantam/Curado baitcasting reels
RD0609 — Shimano spinning reels
TLD0010 — Shimano TLD lever drag reels
One O-ring fits four reel platforms — stock one part for multiple reel repairs. OEM replacement ensures the exact durometer and compression fit for a watertight seal.
Available from Offshore Tackle & Repair in Stuart, FL — your trusted source for genuine Shimano replacement parts and professional reel service.