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 6110-01-056-9890
NSN 6320-01-198-4024
NSN 5950-00-644-5727
NSN 6685-01-514-0431
NSN 5990-01-421-3325
NSN 6130-00-449-6291
NSN 6145-00-695-9568
NSN 2925-01-448-2880
NSN 5996-01-339-7539
NSN 2925-01-364-7926
NSN 5835-01-321-7895
NSN 6220-00-536-8763