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 6110-01-141-3555
NSN 6610-00-401-2601
NSN 5895-01-230-1060
NSN 5905-01-649-1212
NSN 2925-00-980-5749
NSN 5855-01-514-9857
NSN 6240-01-349-5507
NSN 6685-01-546-6967
NSN 5985-01-620-9359
NSN 6130-01-179-7802
NSN 6110-01-145-3814
NSN 5985-01-572-3481