Designed with a hybrid yarn and combining advanced, expanded, graphite PTFE yarn with carbon yarn reinforcement.

Compliance is made easier with Chesterton 1935 food grade compression packing. While EC 1935 requires that manufacturers declare compliance with the standard, it does not require independent testing for verfication. It can also be difficult to ensure your suppliers are compliant. Certified by an independent lab, Chesterton 1935 is safe for your food and beverage sealing applications.

Chesterton 477-1T is a tough, yet pliable, continuous filament carbon yarn packing impregnated throughout with PTFE to provide a non-contaminating, non-staining carbon yarn packing.  Developed for the tough applications in the pulp and paper industry, 477-1T is specially designed to be used in high pressure feeders, pre-steaming vessels and applications that are moving abrasive slurries. This packing's combined force of carbon yarn and PTFE dispersions increases its chemical resistance against strong caustic and acid mediums. 

Chesterton 425 is manufactured with a virgin PTFE filament and a white oil lubricant. It is perfectly suited for use in valves and also in rotating equipment such as blenders, mixers, agitators and other rotating equipment. Chesterton 425 complies with the USDA requirements for minimal food contact and FDA specification 21 CFR, 178.3620 for lubricants with incidental food contact as well as 177.1550 perfluorocarbon resins.

This unique, carbon and graphite construction packing provides plant-wide utility off a single spool. Chesterton 370 is manufactured from a high-quality carbon yarn incorporated with particles of pure graphite, high-temperature tolerant oils, and molybdenum disulfide, all of which act as long-life lubricants and blocking agents. The low-friction carbon yarn has exceptional high-temperature capability in a non-oxidizing environment. 

Chesterton 329 Stern-Lon® is square-plait-braided to provide an unusually flexible, formable shft packing. The base fiber is a long-fibered, roved flax of the highest quality. 329 is graphite-free to avoid galvanic corrosion on shafts.