AMERICAN SEAL & PACKING

Material Styles / Types Style	Type of Elastomer	Typical Shore A Hardness	Temperature Range °F(°C)	Relative Price
Outer Heel
H1	Hard, dense, rugged aramid fiber oil resistant - rubber composition	95+	-65 to +250 (-54 to +177)	Low
H3	Rigid dense - aramid fiber oil resistant - composition	93	-20 to +250 (-29 to +121)	Medium
H5	Hard, dense, special aramid fiber - high temperature rubber composition of Resistan® (special formulation of fluoroelastomer)	95+	-40 to +400 (-40 to +260)	High
STH1	Style H1 with metal reinforcement in heel, body	95+	-65 to +300 (-54 to +149)	Low
Outer Heel
L3	Neoprene Nitrile	55	-40 to +200 (-40 to +93)	Medium
L5	Nitrile (replaces Style L10)	77	-20 to +250 (-29 to +149)	Low
L7	Nitrile	89	-30 to +300 (-34 to +149)	Low
L8	Neoprene - Fiber	93	-20 to +250 (-29 to +121)	Medium
L16*	Resistan® (special formulation of fluoroelastomer)	85	-40 to +400 (-40 to +260)	High
L17	PTFE* (Types TMA-L and TMA-S only)		-300 to +350 (-184 to +177) (+260)+500 intermittent	High
L50	Alaska NitrileTM (special formulation of Nitrile Elastomer)	85	-50 to +250 (-46 to +121)	Medium
L70	Alaska NitrileTM (special formulation of Nitrile Elastomer)	75	-70 to +250 (-57 to +121)	Medium

1. Other special application seal materials are available
2. Specialty Materials for use with the F/L and SlipTite designs are available for varying service conditions. Contact your American Seal & Packing Representative

* Registered DuPont trademark
* Style H5/L16 marked with narrow white band on heel body for identification purposes.