188c
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DESCRIPTION
Single Spring Mechanical Seal 188c | PS-188 Equivalent
Equal to industry standard number 188 / PS-188
Shaft size: 7/8″ single spring mechanical seal with 1.500″ x .405″ cup seat, 1.315″ rotary OD, 1.437″ working length
Crimped rotary head type N-22. Utilized in centrifugal pumps, mixers, rotating equipment, and further apparatus.
Interchange / replacements:
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Equivalent to Pac-Seal T-21 (long working length) and Burgmann MG9
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Can replace Type E and Type 1 in many applications (confirm dimensions)
Design & construction:
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Electro-polished 304 stainless steel metal parts
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Elastomeric bellows for stable sealing and easy installation
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Independent of shaft rotation
Material options (select above):
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CAR/CER/NIT — Carbon/Ceramic, Nitrile elastomers
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CAR/CER/VIT — Carbon/Ceramic, Viton/FKM elastomers
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SIC/SIC/VIT — Silicon Carbide/Silicon Carbide, Viton/FKM elastomers
Please click “specifications” below for OEM numbers and Pump Nameplate Data
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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SPECIFICATIONS
OEM numbers: 2657110, 2663072 , 40090790W , HYD1Q1 , 2657110, 2663072 , X203224 , FZD204FC , 13131A , 9791 , Q26-177-Y2
Brands: CARVER PUMP COMPANY , CHICAGO PUMP (Division of GRUNDFOS, INC.) , DUNHAM-BUSH (MEPCO: Marshall Engineered Products Company) , FAIRBANKS NIJHUIS , PEERLESS PUMP COMPANY , REXNORD INDUSTRIES, LLC. , ROTH PUMP CO. , SCHLUMBERGER LIMITED , SHERWOOD PUMP , WEINMAN® (Division of CRANE PUMPS & SYSTEMS)
Nameplate Data: None available
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PHYSICAL PROPERTIES
T-N11/N22 Seal Heads
Our T-N11/N22 type seal heads are designed with a reduced outer diameter, making them fully compatible with ANSI seal chamber dimensions. The rotary portion of our seal is typically smaller than the stationary seat, and can fit straight box bores where many other seals cannot.
These seals are direct replacements for industry-standard T-E / 1 heads as well as C / 21 models.
Note: The N11/N22 seal designs max shaft size is 2.25″. For larger shafts, please refer to our other seal types.
Have questions? Call us anytime—we’re here to help.


