O-Ring Rebuild Kit Fits FX WCMK3-MAV - Complete Replacement Seal Kit

Is your FX WCMK3-MAV losing pressure, leaking down or failing to hold air? Worn o-rings are the usual cause, and a complete kit lets you reseal everything at once instead of chasing one leak at a time.

This kit contains the o-rings needed to reseal the FX WCMK3-MAV, 60 different sizes, matched to the factory-specified sizes.

Kit Details

You Can Do This Repair

Fully de-gas or depressurize before disassembly. Work over a tray so small parts are not lost, replace one o-ring at a time so each goes back in the right place, and lubricate each new ring with a seal-safe grease rated for your system. Pressure test before returning to service.

Pro Tip: Photograph each stage of disassembly. It makes reassembly straightforward even on your first rebuild.

Shipping: This part is special-ordered and packed for you. It ships from our facility in about 10 business days, then transits by the carrier service you choose at checkout. The estimated delivery date shown on this page includes that lead time.

Why Buy From Beaver Island Parts Company

• Clear fitment information. OEM reference numbers and every detail we have are listed up front so you can confirm fit before you buy.
• Inspected, packed and labeled by us. Each order is checked and repacked in a bag labeled with the part's size and material, so it never gets lost in a parts bin.
• Real people who answer fitment questions. We are an American family-owned and operated small business. Send us your measurements or model number and we will help you confirm the right part.
• Replacement guarantee. If we ship the wrong item, or it arrives damaged or defective, we replace it free of charge.

Note: Beaver Island Parts Company is not affiliated with FX Airguns. All brand names, model numbers and part numbers referenced are used solely to confirm compatibility and are the trademarks of their respective owners.