Industrial professionals, listen up! This Sterling Seal Style 24A valve stem packing is the real deal for demanding applications. Made from 100% pure expanded PTFE in a unique braid-over-braid-over-core construction that creates a round cross section. This special design makes it firm yet conformable - it handles higher pressures than many competitive products while still being workable enough to conform easily to worn valve stems and stuffing boxes. When compressed, it forms a super high-density packing that creates an excellent seal. The chemical resistance is impressive too - it handles virtually all chemicals in the 0-14 pH range and won't contaminate your flow media. This makes it ideal for food processing, beverage, pharmaceutical industries where purity matters. It's also commonly used in pulp and paper operations and general chemical applications. The 1/16 inch cross section comes on a convenient 50-foot spool, giving you plenty of material for multiple jobs. The PTFE construction means it's compatible with a wide range of temperatures and media types. If you're tired of packings that fail under pressure or don't conform properly to worn equipment, this Style 24A might be your solution. It's that reliable workhorse packing that just performs consistently across various challenging applications.