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 5990-01-538-0923
NSN 6130-01-624-8360
NSN 5950-01-226-1074
NSN 6320-01-364-1840
NSN 5835-01-218-3756
NSN 6610-01-390-6925
NSN 6220-01-374-6667
NSN 7035-00-361-5975
NSN 5910-01-141-6372
NSN 6685-00-148-9265
NSN 6620-01-388-8955
NSN 2925-00-149-0760