238c Mechanical Seal (PS-238) – 1-5/8″

238c Mechanical Seal (PS-238) – 1-5/8″

SKU: N/A Brand: VULCAN ENGINEERING

Weight	.9 lbs
Dimensions	2.5 × 2.5 × 2 in

Material

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238c Mechanical Seal (PS-238) - 1-5/8" quantity

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DESCRIPTION

Single Spring Mechanical Seal 238C — 1-5/8″| PS-238

238c single spring mechanical seal, PS-238 / 238 equivalent. Fits 1-5/8″ shaft with 2.375″×.500″ seat and Type N-11 (Type C/21) rotary head.

Typical applications: Centrifugal pumps, mixers, and other rotating equipment.

Key specs: Shaft size: 1-5/8″ single spring seal • Seat: 2.375″ x .500″ cup • Rotary OD: 2.185″ • Working length: 1.375″

Design & construction:
Crimped rotary head (Type N-11)—similar to industry Type C / 21; can also replace Type D / 2 with a simple spring change (in most cases). Electro-polished 304 stainless steel metal parts. Elastomeric bellows. Non-directional (independent of shaft rotation).

Same seal, same dimensions — only the seal faces and rubber parts change. Most clean-water pumps take the Standard seal. Step up to an Upgrade if your pump runs hot, handles chemicals, or pumps gritty water.

Seal Material	Max Temp	Choose This If
3 seal materials available — choose yours from the drop-down menu above.
Standard – Carbon/Ceramic/NitrileCAR/CER/NIT	200°F	Clean water at neutral pH — HVAC, water transfer, pool and general-service pumps. This is the standard build.
Upgrade – Carbon/Ceramic/VitonCAR/CER/VIT	450°F	Your pump runs hot, or handles glycol, oils, fuels, bleach or other chemicals that break down standard Nitrile.
Upgrade – Silicon Carbide/VitonSIC/SIC/VIT	450°F	Gritty or dirty water, wastewater and slurry, or any pump where seals keep wearing out early. Hardest faces we offer.

Still not sure? Text a photo of your pump nameplate to 561-414-1046 and tell us what the pump runs — we’ll tell you which seal material to order. No purchase required.

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.

Looking for more? Shop Pump Repair Kits, Parts & Accessories, and Pre-Cut Gaskets.

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

SPECIFICATIONS

Cross Reference / Alternative Part Numbers

OEM numbers:

238 CAR/CER/NIT: 5211087081 , 52114043805 , 712-0911-753 , 186544 , 21136 , 0030886 , 0030886 , 84004-28 , 21181A032 , 13-950-0886 , SJ-2126-C1-00

238 CAR/CER/VIT: 21189 , 106330 , 10K26 , 84004-26 , 065241A000 , 065241 A000 , SJ-2126-C1-X0

Brands: A-C PUMP (A XYLEM Brand) , AURORA PUMPS (A PENTAIR Brand) , BELL & GOSSETT (A XYLEM Brand) , BURKS® PUMPS (Division of CRANE PUMPS & SYSTEMS) , CRANE-DEMING (Division of CRANE PUMPS & SYSTEMS) , CRANE PUMPS & SYSTEMS , GUSHER PUMPS , MYERS, F.E. , SYNCROFLO, INC. , VERTIFLO PUMP COMPANY

Brands CAR/CER/VIT only: GOULDS PUMPS , KINNEY VACUUM PUMP , TUTHILL PUMP (Division of INGERSOLL RAND)

Pump Nameplate Data: None available

Part number variations
PS-238 / PS238 / PS 238
238 seal / 238 mechanical seal / 238 pump seal
238c / 238 C / 238-c

Size / measurement variations
1-5/8″ mechanical seal / 1.625″ seal / 1 5/8 seal
2.375 × .500 seat / 2-3/8 × 1/2 seat / 2.375 x 0.5 seat
2.185 rotary OD / 2.185″ OD
1.375 working length / 1-3/8 working length

Style variations
N-11 / N11 / T-N11 seal head
Type C/21 seal / Type 21 mechanical seal / C21 seal
Type D/2 replacement (spring change)
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 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.

Disclaimer: Seal House USA provides aftermarket replacement parts. Any OEM names are used strictly for cross-reference. We are an independent supplier.

Weight	.25 lbs
Dimensions	1.5 × 1.5 × 1.25 in

Weight	.9 lbs
Dimensions	3.25 × 3.25 × 2.25 in