to "Spring-Back." AmeriSeal O-Rings are used as static face type seals and should not be used as a dynamic seal. While the majority of seals are circular, many seals are produced...O-Seals A World Leader inSealing Technology O-Seals Custom-Designed SealsBoss SealsCombustion SealsC-SealsE-SealsO-SealsSpring Engineered SealsApplication Data Sheet Form... Description and Applications of Metallic "O" Ring Seals The AmeriSeal O-Ring Seals are used when elastomers and other non-metallic seals will not seal properly or do not offer the required...