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561.414.1046

4240c Mechanical Seal (PS-4240) — 5/8″ (Goulds 10K10)

4240c mechanical seal is a direct-fit 5/ seal, the PS-4240 equivalent, cross-referenced to Goulds 10K10. ps-680c

4240c Mechanical Seal (PS-4240) — 5/8″ (Goulds 10K10)

Weight .5 lbs
Dimensions .75 × .75 × 1 in
QTY Price

$13.00
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  • DESCRIPTION

    4240c Mechanical Seal (PS-4240) — 5/8″ (Goulds 10K10)

    The 4240c mechanical seal is a direct-fit 5/8″ shaft seal, the PS-4240 equivalent, cross-referenced to Goulds 10K10. It is built to OEM-equivalent standards or higher with a Type 166 footprint and a machined carbon face for longer service life.

    Machined Carbon Face 
    Our 4240c uses a precision-machined, resin-impregnated carbon face — not the molded plastic/phenolic carbon found in standard equivalents — for smoother sealing and longer life. For the standard molded carbon version, see our 680c seal.

    At a Glance 

    • Goulds Reference: 10K10 (also 10K121, 10K258)

    • PS Reference: PS-4240 / 4240c

    • Shaft size: 5/8″

    • Cup Seat:1.187″ × 0.288″ / 0.296″ (verify thickness)

    • Footprint: Type 166 (replaces Type 16 / G / A / 6 / AV / 2100 styles)

    • Faces: Ceramic/Carbon: Machined carbon (not molded/phenolic) vs. ceramic, with Nitrile elastomers — for smoother sealing and longer life.

    Why This Seal

    Our Carbon/Ceramic build uses precision-machined, resin-impregnated carbon — not the plastic/phenolic used in PS-702 and similar equivalents — for smoother sealing and longer service life.

    Applications

    Built for Goulds pumps using the 5/8″ shaft and Type 166 seal arrangement. Matching from a worn seal? Confirm your shaft size and cup seat thickness first, or send a photo of the old seal and your pump nameplate to info@sealhouseusa.com, or call/text 561-414-1046. No purchase required.

    Working on a Goulds pump? We build complete rebuild kits for Goulds jet and Irri-Gator pumps — this seal together with the diaphragm and the guide vane seal ring, in one part number instead of three.

    Pick the kit that matches your pump:

    Need the parts separately? 5K231 Spacer Ring · 5K256 Diaphragm (GT) · 5K162 Diaphragm (J-series). Don’t see your model? Call or text 561-414-1046 and we’ll match it.

    Explore our full line up of OEM seals 

    Looking for more? Shop Pump Repair Kits, Shaft Seals and Pre-Cut Gaskets

    Have questions? Call us anytime- we’re here to help 

  • SPECIFICATIONS

    Cross Reference — Goulds 10K10 / PS-4240
    Use these to match manuals, invoices, and old packaging:

    • Goulds: 10K10, 10K121
    • PS reference: PS-4240 / 4240c
    • Direct-fit crossovers: PS-702, PS-4462, PS-518, PS-701, PS-4284
    • Footprint: Type 166 (Type 16 / G / A / 6 / AV / 2100)

    Common typed variations (same part, different formats):

    • 10K10 = 10 K 10
    • 10K121 = 10 K 121
    • PS-4240 = PS4240 = PS 4240
    • 4240c = 4240 C = 4240-c
Disclaimer: Seal House USA provides aftermarket replacement parts. Any OEM names are used strictly for cross-reference. We are an independent supplier.

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