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 5985-01-475-8711
NSN 4140-01-052-5221
NSN 6150-01-547-9866
NSN 5910-01-372-1491
NSN 6105-01-562-2078
NSN 5925-01-628-6909
NSN 2925-01-170-8018
NSN 5985-01-072-4764
NSN 6145-01-271-6506
NSN 6320-01-191-6717
NSN 6650-01-527-2610
NSN 5905-00-600-5294