Hot Tub Gaskets and O-Rings
Stop leaks in your hot tub or spa with our comprehensive selection of o-rings and gaskets. From pump seal o-rings to jet body gaskets, our parts are manufactured from EPDM and silicone materials rated for hot, chemically treated spa water. We carry hundreds of sizes to fit nearly any spa application. We offer competitive international shipping rates to buyers worldwide.
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5" x 5" Flange Element Gasket for Spa Heater Housing
Therm Products
$10.99Square 5" x 5" Flange Element ComponentFeatures welded construction design, primarily compatible with plastic manifold systems including Brett Aqualine, Premier, Allstate, and Hot Water product lines. Equipped with dual 5/16" thermowells, integrated...$10.99 -
MSRP: $4.34$3.38 -
2 1/2" Therm Style Union Gasket for Hot Tub Heater & Pump - 3 1/4" OD x 2 3/4" ID
HTPOFAmerica
MSRP: $9.99$7.99This component is a 2 1/2" Therm Style Union Gasket Only designed for installation with 2 1/2" heater or pump unions in your spa system.When working with 2 1/2" heaters or pumps, please verify measurements carefully as Global offers two distinct sizes of...MSRP: $9.99$7.99 -
2" Spa Pump & Heater Union Gasket - Extra Thick 1/4" Flat Seal
Waterway Plastics
MSRP: $6.31$4.91This extra thick 1/4" flat seal gasket is specifically designed for 2" pump and heater unions in hot tubs and spas. Engineered with superior thickness for enhanced durability and leak prevention, this replacement gasket ensures a watertight connection...MSRP: $6.31$4.91 -
Cal Spa Mo-Flo Heater Union Gasket 2" ID x 3" ID with 2-5/8" Thin Lip
HTPOFAmerica
MSRP: $5.99$4.99This Mo-Flo heater union gasket is designed specifically for Cal Spa applications featuring a 2" inner diameter and 2-3/4" outer diameter. The distinguishing feature of this gasket is its 2-5/8" center to center small lip design. The lip profile is...MSRP: $5.99$4.99 -
2-1/2" Pump Union T Gasket - 3 5/8 Inside Thread Compatibility - 3 1/4" O.D. x 2 3/8" I.D.
HTPOFAmerica
MSRP: $9.99$7.99This 2 1/2" Pump Union Gasket Only creates a watertight seal between your pump and its 2 1/2" union fitting. Designed for unions measuring approximately 3 5/8" Inside Threads, this gasket features precise dimensions of 3 1/4" O.D. x 2 3/8" I.D. with a 2...MSRP: $9.99$7.99 -
1 1/2" Union Gasket for Heater or Pump - 1 7/8" Groove - 2 3/8" Diameter
HTPOFAmerica
MSRP: $7.99$4.99IMPORTANT: This gasket is NOT compatible with Coleman SALUSPA systems. Please refer to specific Saluspa gaskets for those models.This is a standard 1 1/2" union gasket designed for heater or pump connections. With an outer diameter of 2 3/8" and...MSRP: $7.99$4.99 -
Union O-Ring 2-3/8" ID x 1/8" Width, 2 1/2" Center to Center for Heater & Pump
HTPOFAmerica
MSRP: $6.99$4.99Premium replacement union O-Ring designed for 2" heater tailpiece unions and pump unions in spa, pool, and hot tub systems. This versatile seal features precise dimensions: 2 3/8" inside diameter, 1/8" cross-section width, and 2 1/2" center to center...MSRP: $6.99$4.99 -
1-1/2" Flat Union Gasket for Spa Heater & Pump - 2-5/16" OD, 1-7/16" ID
HTPOFAmerica
MSRP: $4.51$3.51Premium flat gasket engineered for 1-1/2" union connections on spa pumps and heaters. Features 2-5/16" outer diameter and 1-7/16" inner diameter for precise fitment. This versatile gasket works alongside o-rings when additional sealing is required to...MSRP: $4.51$3.51 -
2" Union Flat Gasket - Pump & Heater - 2-15/16" OD x 2-1/8" ID - No Lip
HTPOFAmerica
MSRP: $7.99$5.99This versatile flat gasket works with 2" unions for pumps and heaters, featuring a no-lip design with 2-15/16" OD and 2-1/8" ID dimensions. Ideal for multiple spa and pool applications, this seal component can be paired with an o-ring when additional...MSRP: $7.99$5.99 -
2" Spa Heater Pump Union Gasket 2 1/2" Lip - Balboa Gecko Compatible
HTPOFAmerica
MSRP: $7.99$4.99This is a standard 2" heater or pump union seal featuring a 2 1/2" lip measurement center to center. External diameter measures 2 7/8" while the internal diameter is approximately 2 3/16". The raised ridge that inserts into the union measures 2 1/2"...MSRP: $7.99$4.99 -
Non-Standard 2" Heater/Pump Union Gasket - 2 5/8" Lip, 2 7/8" OD for Hot Tub Spa
HTPOFAmerica
MSRP: $7.99$4.99This is a NON-STANDARD 2" Spa Heater/Pump Union Gasket featuring a 2 5/8" Center-to-Center Lip dimension. Outer diameter measures 2 7/8" with an approximately 2" inner diameter. The sealing lip designed to sit in the union groove measures 2 5/8"...MSRP: $7.99$4.99