A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5910-00-248-5725
NSN 5915-01-124-7037
NSN 6685-01-514-5747
NSN 6685-00-955-1232
NSN 6610-01-140-9608
NSN 5855-00-361-0167
NSN 5930-01-170-2316
NSN 5925-01-578-5971
NSN 6105-01-200-0959
NSN 5990-00-021-9409
NSN 6240-01-513-0754
NSN 5998-01-196-4057