Oatey 42158 Rubber Caulking Gasket, 2-Inch

Oatey 42158 is a tapered rubber caulking gasket listed for a 2-inch shower-drain pipe connection. Its stated fit and replacement-gasket caveat make matching the pipe material and drain setup important before purchase.

At a glance

A replacement caulking gasket for an Oatey no-calk shower-drain setup.
The listing describes a compression seal tightened around 2-inch Schedule 40 DWV pipe using a caulking nut and wrench.
The product details identify the material as rubber and the shape as tapered.

Price

$20.38Save 20%

Reference price: ~~$25.59~~

Price checked: Nov 14, 2026

View offer Ahead of Black FridayExplore the selection

Often bought together

Oatey 42239 Brass and Plastic No-Calk Shower Drain Wrench, Stainless Steel

$26.95

Pros and cons

Pros

A single replacement gasket is listed, useful when only this component is needed.
The listing gives a specific 2-inch pipe fit and describes the tightening method.

Technical specifications

13 specifications

Identity
Brand	Oatey

Dimensions and installation
Form factor	Taper
Dimensions listed	10.16 x 9.53 x 2.54 cm; 45.36 g
Weight listed	45.4 g

Materials and protection
Material listed	Rubber

Fit and use
Nominal size	2 Inch
Measurement system	inch
Pipe connection claim	Compression gasket tightens around 2" Sch. 40 DWV pipe with caulking nut and wrench
Other listed pipe compatibility	Can be used with 15" Sch. 40 DWV pipe and 15" or 2" Copper DWV pipe when caulking gasket is replaced
Application claim	Ideal for slab construction

Package
Package quantity	1
Included components listed	Rubber Caulking Gasket
Country of origin	USA

What to know before buying

Listing details to confirm

Fit language needs careful interpretation: the title specifies 2-inch copper DWV pipe, while the installation claim describes 2-inch Schedule 40 DWV pipe, and the broader compatibility claim mentions 15-inch pipe and says copper use requires replacing the gasket. Confirm the intended pipe and gasket configuration before ordering. The listing does not establish that the drain body or caulking nut is included.

What’s in the box

Included

Rubber caulking gasket

Who is it for?

A good fit for

Replacing the caulking gasket in a compatible Oatey no-calk shower drain.
Buyers matching a 2-inch DWV pipe and existing drain hardware.

Less suited to

Anyone needing a complete shower-drain assembly rather than a replacement gasket.
Installations where pipe size or material has not been matched to the gasket and drain instructions.

Oatey 42158 Rubber Caulking Gasket, 2-Inch · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.2 / 5 · 112 ratings

5 stars62%62%
4 stars17%17%
3 stars7%7%
2 stars6%6%
1 star8%8%

Aggregate customer ratings lean positive overall, with most ratings in the top two star categories, but a notable share are lower. Without written feedback, these figures do not show what customers liked or what prompted lower ratings. For a small replacement part, confirm the pipe and drain match rather than treating the ratings as evidence of fit for a particular installation.

Frequently asked questions

What is the Oatey 42158?

It is listed as a rubber caulking gasket for a no-calk shower drain, with a stated 2-inch size.

What pipe does the listing say it fits?

The title identifies 2-inch copper DWV drain pipe. Installation details also describe tightening around 2-inch Schedule 40 DWV pipe, while another compatibility statement includes different pipe sizes when the gasket is replaced. Confirm the exact configuration for your drain.

Does the package include the whole drain?

The listed component is a rubber caulking gasket. The supplied information does not establish that a drain body, caulking nut or wrench is included.