ePTFE Fiber Seals | McMaster-Carr

The graphite filler in these expanded PTFE seals dissipates heat away from the shaft, so your pump runs cool at high speeds. Use these seals in applications involving acids, alkalies, brines, and solvents. Cut them to size with a knife; then pack them into place.

GFO seals, also known as 100% GFO, are made entirely of Gore materials.

Seals

										25 ft.
Wd.	Ht.	Max. Pressure, psi	Max. Pressure in Pumps, psi	Max. Pressure in Valves, psi	Max. Speed, fpm	Temperature Range, °F	pH Resistance	Color	For Use With		Each
1/8"	1/8"	1,500	450	1,500	3,800	-400° to 550°	0-14	Black	Acids, Alkalies, Brines, Oil, Solvents, Water	0000000	000000
3/16"	3/16"	1,500	450	1,500	3,800	-400° to 550°	0-14	Black	Acids, Alkalies, Brines, Oil, Solvents, Water	0000000	00000
1/4"	1/4"	1,500	450	1,500	3,800	-400° to 550°	0-14	Black	Acids, Alkalies, Brines, Oil, Solvents, Water	0000000	000000
5/16"	5/16"	1,500	450	1,500	3,800	-400° to 550°	0-14	Black	Acids, Alkalies, Brines, Oil, Solvents, Water	0000000	000000
3/8"	3/8"	1,500	450	1,500	3,800	-400° to 550°	0-14	Black	Acids, Alkalies, Brines, Oil, Solvents, Water	0000000	000000
7/16"	7/16"	1,500	450	1,500	3,800	-400° to 550°	0-14	Black	Acids, Alkalies, Brines, Oil, Solvents, Water	0000000	000000
1/2"	1/2"	1,500	450	1,500	3,800	-400° to 550°	0-14	Black	Acids, Alkalies, Brines, Oil, Solvents, Water	0000000	000000
5/8"	5/8"	1,500	450	1,500	3,800	-400° to 550°	0-14	Black	Acids, Alkalies, Brines, Oil, Solvents, Water	0000000	000000
3/4"	3/4"	1,500	450	1,500	3,800	-400° to 550°	0-14	Black	Acids, Alkalies, Brines, Oil, Solvents, Water	0000000	000000

GFO Seals

Wd.	Ht.	Max. Pressure, psi	Max. Pressure in Pumps, psi	Max. Pressure in Valves	Max. Speed, fpm	Temperature Range, °F	pH Resistance	Color	For Use With		5 ft.	10 ft.	25 ft.
1/8"	1/8"	300	300	Not Rated	4,300	-400° to 550°	0-14	Black	Acids, Alkalies, Brines, Oil, Solvents, Water	000000	000000	000000	000000
3/16"	3/16"	300	300	Not Rated	4,300	-400° to 550°	0-14	Black	Acids, Alkalies, Brines, Oil, Solvents, Water	000000	00000	00000	000000
1/4"	1/4"	300	300	Not Rated	4,300	-400° to 550°	0-14	Black	Acids, Alkalies, Brines, Oil, Solvents, Water	000000	00000	00000	000000
5/16"	5/16"	300	300	Not Rated	4,300	-400° to 550°	0-14	Black	Acids, Alkalies, Brines, Oil, Solvents, Water	0000000	00000	000000	000000
3/8"	3/8"	300	300	Not Rated	4,300	-400° to 550°	0-14	Black	Acids, Alkalies, Brines, Oil, Solvents, Water	0000000	000000	000000	000000
7/16"	7/16"	300	300	Not Rated	4,300	-400° to 550°	0-14	Black	Acids, Alkalies, Brines, Oil, Solvents, Water	0000000	000000	000000	000000
1/2"	1/2"	300	300	Not Rated	4,300	-400° to 550°	0-14	Black	Acids, Alkalies, Brines, Oil, Solvents, Water	0000000	000000	000000	000000
5/8"	5/8"	300	300	Not Rated	4,300	-400° to 550°	0-14	Black	Acids, Alkalies, Brines, Oil, Solvents, Water	0000000	000000	000000	000000
3/4"	3/4"	300	300	Not Rated	4,300	-400° to 550°	0-14	Black	Acids, Alkalies, Brines, Oil, Solvents, Water	0000000	000000	000000	000000

Heat-Shielding Abrasion- and Chemical-Resistant Packing Seals

Made of ePTFE with a graphite filler and reinforced by Aramid, these seals combine heat protection with chemical and abrasion resistance. Often used in pumps, their base material is ePTFE, so they’ll stand up to chemicals such as acids, alkalies, brines, and solvents. The added graphite filler dissipates heat away from shafts, preventing your pump from overheating even at high speeds. To extend their life, the corners of these seals are reinforced with Aramid, which resists abrasion and prevents extrusion. Cut them to size with a knife and then pack them into place.

Wd.	Ht.	Max. Pressure, psi	Max. Pressure in Pumps, psi	Maximum Pressure in Valves, psi	Max. Speed, fpm	Temperature Range, °F	pH Resistance	Color	For Use With		5 ft.	10 ft.	25 ft.
1/4"	1/4"	2,500	700	2,500	2,700	-10° to 500°	3-11	Black	Acids, Alkalies, Brines, Oil, Solvents, Water	0000000	00	000000	0000000
3/8"	3/8"	2,500	700	2,500	2,700	-10° to 500°	3-11	Black	Acids, Alkalies, Brines, Oil, Solvents, Water	0000000	000000	000000	000000
1/2"	1/2"	2,500	700	2,500	2,700	-10° to 500°	3-11	Black	Acids, Alkalies, Brines, Oil, Solvents, Water	0000000	00000	000000	000000