Which from following polymers is used to obtain oil seals?

Step-by-step solution

Teflon (polytetrafluoroethylene, PTFE) is the correct material for oil seals due to its combination of chemical inertness, thermal stability, and low friction coefficient. As a synthetic fluoropolymer, it demonstrates exceptional resistance to oils, chemicals, and extreme temperatures, which are critical properties for seal integrity and durability. While Dacron (a polyester), Nylon 6 (a polyamide), and low-density polyethylene serve various applications, none provide the superior performance required for oil seals