Umarex Ruger Air Hawk Elite II Piston Seal

NEW ProSEAL25 Piston Seal with Moly 

Precision CNC machined from no burn Urethane, molybdenum disulfide impregnated material that will provide
Long-life permanently lubricated.

Our Vortek ProSEAL25-M advantages surpass Oring type seals and there's no need for special, expensive super lubes required like MicroLubro226, Krylox205-226, etc.
Our precision-machined PS25-M seal will conform excellent compression sealing during dynamic sealing in non-honed/honed tubes.
Further, it performs excellent power sealing in over and under-size compression tubes.
Shown assembled onto Diana piston. 
  

Designed and precision machined for maximum sealing and Extra-dampening fitting the following Air Gun Models:
Fits 25mm bore models:
and to other air guns with 25mm bore
Gamo: 220, 440, 880, B20-26
Diana: 24,26,28, RWS94, B18-19
Some Chinese bores of cheaper models
BSA
TX200
Pro-Sport.