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 5910-01-085-0639
NSN 6685-00-929-6093
NSN 5990-01-059-0947
NSN 4140-00-660-8699
NSN 5999-01-041-5880
NSN 5999-00-144-7698
NSN 5998-00-756-2752
NSN 6240-00-079-1759
NSN 5985-01-161-5823
NSN 5975-00-080-4633
NSN 6130-01-564-8116
NSN 6130-00-809-5267