It is all made from one single piece Alloy Steel and hot formed in totally controlled Heart Treatment Plant to achieve the uniform hardness all over and good spring action.
Retaining more than 90% Stand Off.
Zero Starting and Running Forces.
Restoring forces up to 3 times greater than API Standard.
Low friction factor.
Available Size: 4-1/2” to 20”
(Any special sizes or combination can available on request). They are shipped in assembled condition only.