I have a 7 inch dust collector inlet that I wish to reduce to a 6 inch pvc pipe, and would like to know if the 8 inch side seal to a 7 inch fitting?

Check the fernco.com website for the exact ID dimension, which is 8.51". Fernco says it will tighten down 5%, which is ~8.07". If the OD of your 7" pipe is about 8", then it should work. You can increase the OD of your 7" pipe by wrapping it with duct tape or some other material.

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Fernco 1056-86 Flexible Pipe Coupling 8” CI/Plastic/Steel to 6” CI/Plastic/Steel

Product ID: 275883236

Details

Brand
Fernco
Colour
Black
Item dimensions L x W x H
15.2 x 21.6 x
Material
Polyvinyl
Size
8" x 6"

🔗Fits 6" to 8.51" pipe ODs

🧪Chemical & sewer gas resistant

🛠️50-year durability

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27341 som

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Description

🔧 Connect with Confidence — The Last Coupling You'll Ever Need!

CERTIFIED QUALITY ASSURANCE - Meets ASTM D 5926, C 1173, CSA B602 & UPC standards for trusted performance.
BUILT TO LAST HALF A CENTURY - Engineered for a 50-year leak-proof service life with premium elastomeric PVC.
UNIVERSAL PIPE COMPATIBILITY - Seamlessly connects PVC, ABS, Cast Iron, Copper, Steel & more for versatile plumbing solutions.
OPTIMIZED FIT FOR FLEXIBILITY - Designed to fit pipe outside diameters from 6" to 8.51", ensuring a secure, flexible joint.
EFFORTLESS NO MESS INSTALLATION - Forget primers and glues—install quickly with corrosion-resistant stainless steel clamps.

The Fernco 1056-86 Flexible Pipe Coupling is a high-performance, elastomeric PVC fitting designed for a 50-year lifespan. It connects a wide range of pipe materials and sizes (6" to 8.51" ODs) with a leak-proof, chemical-resistant seal. Easy to install with rustproof stainless steel clamps, it meets multiple industry standards, making it the go-to choice for professional plumbing and sewer applications.

Specifications

ASIN	B000VZPZQI
Brand	Fernco
Brand Name	Fernco
Color	Black
Colour	Black
Connector Type	Coupling
Connector type	Coupling
Customer Reviews	4.7 out of 5 stars 87 Reviews
Global Trade Identification Number	00018578001664
Item Dimensions	15.2 x 21.6 x 21.6 centimeters
Item Weight	1.4 Kilograms
Item dimensions L x W x H	15.2 x 21.6 x 21.6 centimeters
Manufacturer	Fernco Inc.
Manufacturer Part Number	1056-86
Material	Polyvinyl Chloride
Material Type	Polyvinyl Chloride
Model Number	1056-84
Number of Pieces	1
Size	8" x 6"
Thread Type	UN
UPC	018578001664
Unit Count	1 Count

Reviews

P**T

Tight fit

22.04.2025

J**R

Worked well!

1.06.2025

B**N

Good

6.08.2025

B**H

Great Product!

11.11.2021

T**R

Well described.

8.07.2023

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27341 som

Duties & taxes included

In stock

Sold byAmazon KyrgyzstanDelivered 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 Kyrgyzstan.

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