SPS-523 Mechanical Seal (PS-523) — 7/8″

Single Spring Mechanical Seal SPS-523 | PS-523 Equivalent

SPS-523 single spring mechanical seal, PS-523 / 523 equivalent. Fits 1-7/8″ shaft with 2.625″× 0.500″ cup seat, and Type N-22 rotary head.

Key specs: Shaft size: 1-7/8″ single spring seal • Seat: 2.625″ x 0.500″ • Rotary OD: 2.520″• Working length: 2.125″

Rotary head type E/1. Utilized in centrifugal pumps, mixers, rotating equipment, and further apparatus.

Interchange / replacements:

• Can replace Type E and Type 1 in many applications (confirm dimensions)

Design & construction:

• Electro-polished 316 stainless steel metal parts

• Elastomeric bellows for stable sealing and easy installation

• Independent of shaft rotation

Material options (select above):

• CAR/CER/NIT — Carbon/Ceramic, Nitrile elastomers

• CAR/CER/VIT — Carbon/Ceramic, Viton elastomers

• SIC/SIC/VIT — Silicon Carbide/Silicon Carbide, Viton elastomers

Have questions? Check out our Single Spring Seal Guide  or call us anytime—we’re here to help.

Explore our full lineup of Single Spring Seals—PS replacements, pool/spa seals, and our SPS line.

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Please click “specifications” below for OEM numbers and Pump Nameplate Data