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Compatible (151121 EPDM) #236 EPDM Replacement O-Ring for Slim Line Housings with 1/4" & 3/8" & 1/2" NPT Connections

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Compatible (151121 EPDM) #236 EPDM Replacement O-Ring for Slim Line Housings with 1/4" & 3/8" & 1/2" NPT Connections

This EPDM O-Ring (Part #236, replaces 151121) provides a durable, chemical-resistant seal for Pentek Slim Line and compatible filter housings with 1/4", 3/8", or 1/2" NPT cap connections. Designed to fit 6-rib housings, it measures 3-1/2" OD x 3-1/4" ID with 1/8" cross-section for reliable, leak-free performance.
TECHNICAL DETAILS

O-Ring Specifications

Material EPDM (Ethylene Propylene Diene Monomer)
Dimensions 3-1/2" Outer Diameter, 3-1/4" Inner Diameter, 1/8" Cross-Section
Size Designation AS568-236
Housing Compatibility Slim Line housings with 6-rib caps, 1/4" to 1/2" NPT connections
Replaces Part Numbers 151121, 143026, PL-5000, HL-5000, Culligan OR-38
Temperature Range Standard EPDM rated for cold to warm water applications
Chemical Resistance Excellent resistance to chlorine, ozone, and oxidizing chemicals
COMPATIBILITY & APPLICATIONS

Works With Multiple Brands

This universal EPDM O-Ring fits Pentek Slim Line filter housings (5" models with 6-rib design) and is cross-compatible with Ametek, US Filter, Plymouth Products, Kleen Plus, American Plumber, Bruner, and Culligan (OR-38) systems. EPDM material is preferred for municipal water applications where chlorine and oxidizer resistance is critical. Compatible with housings using 1/4", 3/8", or 1/2" NPT threaded caps. Ideal as a replacement seal during routine filter cartridge changes to maintain housing integrity and prevent leaks.

💧 Replace your housing O-ring every 2-3 filter changes or annually, whichever comes first. A light coating of food-grade silicone grease on the O-ring before installation extends seal life and makes future removal easier.
This EPDM O-Ring (Part #236, replaces 151121) provides a durable, chemical-resistant seal for Pentek Slim Line and compatible filter housings with 1/4", 3/8", or 1/2" NPT cap connections. Designed to fit 6-rib housings, it measures 3-1/2" OD x 3-1/4" ID with 1/8" cross-section for reliable, leak-free performance.
TECHNICAL DETAILS

O-Ring Specifications

Material EPDM (Ethylene Propylene Diene Monomer)
Dimensions 3-1/2" Outer Diameter, 3-1/4" Inner Diameter, 1/8" Cross-Section
Size Designation AS568-236
Housing Compatibility Slim Line housings with 6-rib caps, 1/4" to 1/2" NPT connections
Replaces Part Numbers 151121, 143026, PL-5000, HL-5000, Culligan OR-38
Temperature Range Standard EPDM rated for cold to warm water applications
Chemical Resistance Excellent resistance to chlorine, ozone, and oxidizing chemicals
COMPATIBILITY & APPLICATIONS

Works With Multiple Brands

This universal EPDM O-Ring fits Pentek Slim Line filter housings (5" models with 6-rib design) and is cross-compatible with Ametek, US Filter, Plymouth Products, Kleen Plus, American Plumber, Bruner, and Culligan (OR-38) systems. EPDM material is preferred for municipal water applications where chlorine and oxidizer resistance is critical. Compatible with housings using 1/4", 3/8", or 1/2" NPT threaded caps. Ideal as a replacement seal during routine filter cartridge changes to maintain housing integrity and prevent leaks.

💧 Replace your housing O-ring every 2-3 filter changes or annually, whichever comes first. A light coating of food-grade silicone grease on the O-ring before installation extends seal life and makes future removal easier.
$2.01

Original: $5.75

-65%
Compatible (151121 EPDM) #236 EPDM Replacement O-Ring for Slim Line Housings with 1/4" & 3/8" & 1/2" NPT Connections—

$5.75

$2.01

Description

This EPDM O-Ring (Part #236, replaces 151121) provides a durable, chemical-resistant seal for Pentek Slim Line and compatible filter housings with 1/4", 3/8", or 1/2" NPT cap connections. Designed to fit 6-rib housings, it measures 3-1/2" OD x 3-1/4" ID with 1/8" cross-section for reliable, leak-free performance.
TECHNICAL DETAILS

O-Ring Specifications

Material EPDM (Ethylene Propylene Diene Monomer)
Dimensions 3-1/2" Outer Diameter, 3-1/4" Inner Diameter, 1/8" Cross-Section
Size Designation AS568-236
Housing Compatibility Slim Line housings with 6-rib caps, 1/4" to 1/2" NPT connections
Replaces Part Numbers 151121, 143026, PL-5000, HL-5000, Culligan OR-38
Temperature Range Standard EPDM rated for cold to warm water applications
Chemical Resistance Excellent resistance to chlorine, ozone, and oxidizing chemicals
COMPATIBILITY & APPLICATIONS

Works With Multiple Brands

This universal EPDM O-Ring fits Pentek Slim Line filter housings (5" models with 6-rib design) and is cross-compatible with Ametek, US Filter, Plymouth Products, Kleen Plus, American Plumber, Bruner, and Culligan (OR-38) systems. EPDM material is preferred for municipal water applications where chlorine and oxidizer resistance is critical. Compatible with housings using 1/4", 3/8", or 1/2" NPT threaded caps. Ideal as a replacement seal during routine filter cartridge changes to maintain housing integrity and prevent leaks.

💧 Replace your housing O-ring every 2-3 filter changes or annually, whichever comes first. A light coating of food-grade silicone grease on the O-ring before installation extends seal life and makes future removal easier.