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 5925-00-314-4294
NSN 5999-00-993-3375
NSN 5950-00-646-0348
NSN 2925-00-328-0738
NSN 5965-01-204-8505
NSN 5935-01-159-8012
NSN 5975-00-737-8265
NSN 6135-01-377-5729
NSN 5985-00-964-3547
NSN 6685-00-966-5561
NSN 6135-00-295-2614
NSN 5930-01-445-9733