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 5960-00-880-0457
NSN 6620-01-173-8804
NSN 5855-01-033-1375
NSN 6110-01-086-1409
NSN 6110-01-290-5437
NSN 5930-00-231-2818
NSN 5905-01-411-5734
NSN 5855-00-832-9341
NSN 5990-01-393-4808
NSN 5960-00-624-4718
NSN 6645-00-735-1481
NSN 5975-01-318-1356