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 5960-00-872-0531
NSN 5905-01-427-3804
NSN 5985-01-011-2008
NSN 5895-01-531-4037
NSN 5950-01-389-6149
NSN 6220-01-359-7820
NSN 6610-01-157-0426
NSN 6150-01-354-1219
NSN 5985-01-367-4277
NSN 5985-00-548-8246
NSN 6645-00-570-0092
NSN 5935-01-133-4563