The US SEAL PS-979 PS Pump Seal, with a size of 1.250", is equivalent to a John Crane Type 21. It features a carbon primary ring, Ni-Resist mating rings, and Buna secondary seals. Stainless steel metal parts and springs ensure durability. It also features a 1.765" bore cup mounted mating ring.
PS Pump Seal
Size: 1.250"
Type C- Equal to John Crane Type 21
Product Highlights
Ideal for use in rotary and turbine pumps, compressors, mixers, blenders, and chillers.
Product Information
Standard Information
Brand: US SEAL
Manufacturer Part Number: PS-979
Country of Origin: US
Technical Specifications
Elastomer
Buna
Head / Fittings
Type C- Equal to John Crane Type 21
Metal Parts
Stainless Steel
Other Factors
1.765" Bore Cup Mounted Mating Ring
Part Type
Mechanical Seal
Product Notes
Tapered Spring
Quick Specs
PS Pump Seal
Rotary
Carbon
Seal Code
BCFKF
Size
1.250"
Spring
Stainless Steel
Stationary
Ni-Resist
Type
Armstrong; Bell & Gossett
MODEL
PS-979
Manufacturer
U.S. Seal Manufacturing
Part Number
PS-979
Shaft Size
1.250" (1-1/4")
Rotary Head Type
US Seal Type C (John Crane Type 21) *TAPERED SPRING*