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 5996-01-133-2478
NSN 5999-01-601-7492
NSN 6220-01-412-6601
NSN 5950-01-608-0033
NSN 6135-01-659-3426
NSN 6620-01-516-9859
NSN 5905-01-253-5337
NSN 2925-01-061-4012
NSN 6620-00-912-0255
NSN 5999-01-077-4370
NSN 6240-01-152-2662
NSN 6220-01-504-4448