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 6110-01-195-5342
NSN 5930-01-444-5361
NSN 5998-01-625-9240
NSN 5950-00-168-5841
NSN 6610-01-300-8383
NSN 6150-01-192-7399
NSN 5905-01-451-0063
NSN 2925-01-218-5556
NSN 6130-01-296-8379
NSN 5910-01-633-9963
NSN 4140-00-267-1415
NSN 5975-01-499-6057