What are the ID of the 2 x 1 1/4 rubber coupling?

1 and 1/4 x 2 are the size if inner diameters

Is it possible to use for car exhaust

I wouldn't. Exhaust pipes get hot and this isn't heat resistant.

I want to know this answer as well. It doesn't say in the specs what temperature is allowed, neither transient nor continuous. From Wikipedia: The heat stability of raw PVC is very poor, so the addition of a heat stabilizer during the process is necessary in order to ensure the product's properties. Traditional product PVC has a maximum operating temperature around 60 °C (140 °F) when heat distortion begins to occur.[25] Melting temperatures range from 100 °C (212 °F) to 260 °C (500 °F) depending upon manufacture additives to the PVC. The linear expansion coefficient of rigid PVC is small and has good flame retardancy, the limiting oxygen index (LOI) being up to 45 or more. The LOI is the minimum concentration of oxygen, expressed as a percentage, that will support combustion of a polymer and noting that air has 20% content of oxygen.

2” to 1 1/4” adapter Is bigger inside opening than stated. Can a 1 1/4” p trap seal correctly?

I used to connect 2” to 1 1/2”. Both pipe were schedule 40. A P trap is normally a lighter schedule. You may need and adapter from 1 1/4” P trap to 1 1/4” schedule 40.

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Supply Giant EVERCONNECT 4830 Flexible PVC Reducing Rubber Coupling with Stainless Steel Clamps, 2" x 1-1/4, Black

Supply Giant EVERCONNECT 4830 Flexible PVC Reducing Rubber Coupling with Stainless Steel Clamps, 2" x 1-1/4, Black

Product ID: 334649180

Details

Brand
Supply Giant
Colour
Black
Connector Type
Coupling
Exterior Finish
Brass
Item dimensions L x W x H
5.1 x 5.1 x
Material
Polyvinyl

🌍Certified for underground & outdoor use

🔧2" x 1-1/4" flexible PVC reducing coupling

🛡️Leak-proof, rot-proof, and sealed design

€ 40.32

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Description

🔗 Connect with confidence — the flexible coupling pros trust!

DURABLE RESILIENT - Crafted from tough elastomeric PVC, resistant to chemicals, UV rays, fungus, and sewer gases for long-lasting performance.
CERTIFIED RELIABILITY - Meets ASTM C1173, CSA B602 standards and UPC approved, ensuring trusted quality for professional use.
LEAK ROT PROOF SEAL - Advanced sealing technology prevents infiltration and exfiltration, safeguarding your plumbing system from costly failures.
UNIVERSAL COMPATIBILITY - Seamlessly connects cast iron, plastic, copper, lead, and steel pipes for versatile plumbing solutions.
EASY INSTALLATION VERSATILITY - Ideal for drain, waste, vent, and sewer systems indoors or outdoors, making repairs and upgrades effortless.

The Supply Giant EVERCONNECT 4830 is a 2" x 1-1/4" flexible PVC reducing rubber coupling with stainless steel clamps, designed for leak-proof, rot-proof connections across multiple pipe materials. Certified for underground and outdoor use, it offers durable, chemical and UV-resistant performance ideal for drain, waste, vent, and sewer systems. Trusted by professionals for its ease of installation and reliable sealing.

Specifications

ASIN	B07C7MT2GG
Best Sellers Rank	#148,385 in Home Improvement ( See Top 100 in Home Improvement ) #6,476 in Door Hardware & Locks
Brand Name	Supply Giant
Colour	Black
Connector Type	Coupling
Country of Publication	USA
Customer Reviews	4.4 4.4 out of 5 stars (652)
Exterior Finish	Brass
Global Trade Identification Number	00804595048306
Included Components	Coupling
Item Dimensions	5.1 x 5.1 x 7.6 Centimeters
Item Type Name	Flexible PVC Reducing Coupling with Stainless Steel Clamps, 2" x 1-1/4, Black
Manufacturer	Everflow
Manufacturer Part Number	6I52
Material Type	Polyvinyl Chloride
Model Number	6I52
Number of Packs	1
Number of Pieces	1
Size	2 x 1-1/4
Thread Size	2 x 1-1/4
Thread Type	NPT
UPC	804595048306
Unit Count	1.0 Count

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€ 40.32

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Slovakia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Fantastic experience overall. Will recommend to friends and family.

1 month ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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