Us Seal PS-979 PS Pump Seal 1.250 inches

Product Description

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*
• Rotary Head Material: SS/Carbon/Buna
• Rotary Head Dimensions: 1.937" OD, 1.062" Operating Height
• Stationary Seat Type: Cup Mounted Seat (US Seal Type 1)
• Stationary Seat Material: Ni-Resist(SS)/Buna
• Stationary Seat Dimensions: 1.765" Bore, 0.365" Thick
• Maximum Temperature: 225F (107C)
• Maximum Pressure: to 150 psi (10.3 Bar)
• Seal Faces: Carbon vs. Stainless