Sundance® Freeze Line Adapter O-Ring (0.434″ × 0.682″ × 0.125″) – part #6540-263

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Sundance® Freeze Line Adapter O-Ring (0.434″ × 0.682″ × 0.125″) – part #6540-263

Name: Sundance® Freeze Line Adapter O-Ring (0.434″ × 0.682″ × 0.125″) – part #6540-263
Brand: Jacuzzi® Hot Tubs
SKU: 6540-263
Price: 0.29 USD
Availability: InStock

Type: O-Ring

SKU: 6540-263

$0.29

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Freeze line adapter O-ring for Sundance® – 0.434″ ID × 0.682″ OD × 0.125″ cross-section.

Product Description

The 6540-263 O-Ring is a genuine seal used in Sundance® / Jacuzzi® spas, specifically for the freeze line adapter or barb fitting.
It measures 0.434″ inner diameter, 0.682″ outer diameter, and 0.125″ thick.
This O-ring fits the 6540-171 barb / freeze line adapter commonly used in spa pumps.
Made from rubber elastomer to withstand spa temperatures and sanitize conditions.
Replacing this worn or damaged O-ring prevents leaks and maintains water integrity.
It is a cost-effective spare part to restore seal performance around pump adapters or plumbing fittings.

Specifications

Brand :

Dimensions: 0.434" x 0.682" x 0.125

Barcode:

FAQ

Q: What does the 6540-263 O-ring seal?

A: It seals the connection between a freeze line barb / adapter (part 6540-171) and the pump housing, preventing water leakage.

Q: What are its dimensions?

A: 0.434″ ID × 0.682″ OD × 0.125″ cross-section.

Q: What material is this O-ring?

A: Standard rubber elastomer rated for spa conditions (temperature, chemicals).

Q: Can it be used in other spa / pump connections?

A: Potentially, if the dimensions match the groove and mating parts. But it is designed specifically for the freeze line adapter system in Sundance / Jacuzzi spas.

Q: What causes this O-ring to fail over time?

A: Wear, chemical degradation, heat cycling, or damage during disassembly.

Directions

Turn off power to the spa and ensure no pressure in the plumbing.

Remove the barb / adapter (part 6540-171) or pump housing plug that the O-ring seals.

Pull out the old O-ring from its groove.

Clean the groove and mating surfaces thoroughly.

Lightly lubricate the new O-ring with silicone lubricant safe for spas.

Install the 6540-263 O-ring evenly into its groove.

Reassemble the barb / adapter, tighten, and test for leaks under pressure.

Compatability