... .Materials:NBR,NR,FPM...etc 3.Use for all machines o-ring seal:1.Unit price:depends on the material and the ... /ODM service offeredWe manufacture large-sized O-ring(ODMax 1850mm),Oil Seal(ODMax 1700mm)and V-ring(ODMax 1850mm).We can provide all ... O-rings as long as you need. Welcome your inquiry anytime. Excellent axle o-ring seal ...