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 5985-00-108-4989
NSN 5920-01-020-7659
NSN 6150-01-587-6919
NSN 5935-01-411-6300
NSN 5985-00-518-1748
NSN 5960-01-025-2526
NSN 6145-01-531-3685
NSN 5895-01-356-0205
NSN 5925-01-530-7738
NSN 4140-01-361-9198
NSN 5905-00-210-4269
NSN 5895-01-440-9847