Kibblewhite Precision Valve Seal 700-100019 All valve seals are made of 100% solid Viton for long life Meet or exceed OEM specifications When using Kibblewhite spring kits, Kibblewhite valve seals must be used because of spring clearances Sold individually; unless noted Stem Dia. 7.0mm - Guide Dia. 0.475in. - Overall Length 0.565in. - Seal O.D 0.565in.