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 6685-01-152-2846
NSN 5910-01-447-2842
NSN 5996-00-754-2840
NSN 6685-01-470-8794
NSN 6145-01-486-0022
NSN 5990-01-109-5295
NSN 6135-01-222-0703
NSN 4140-01-004-9177
NSN 5930-01-188-7378
NSN 2925-01-270-1124
NSN 6110-01-391-6497
NSN 5985-01-536-5945