Spiral wound gaskets CRIR-type for ASME B16.20 flange type consist of three components: an outer ring (available in either carbon steel or stainless steel), winding/filling element (316L stainless steel with a graphite filler) and an inner ring (316L stainless steel). These gaskets perform exceptionally well in high-pressure applications and are engineered with increased compressive force to help prevent blow-outs.