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NPT Double Sphere Triangle Flexible Screw Union Threaded Rubber Expansion Joint

Updated 2026-11-04 · Markdown version

Model no. REJ

US$16.3210–199 sets

US$15.48200+ sets

MOQ 10 sets · Final price confirmed in your quote

Head Code: Round
Material: Carbon Steel,Stainless Steel,EPDM,NBR,Cr,PTFE,etc.
Surface Treatment: According to Customer Needs
Customized: Customized
Size: DN15-DN4000
Flange Material: SS304,SS316,Carbon Steel, Ductile Iron
Rubber Material: EPDM,Nr,NBR,PTFE,etc
Package Size: 120.00cm * 100.00cm * 120.00cm

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Specifications are as listed for this product. Engineering Hardware & Fasteners confirms ratings, mating parts, compatibility, packing and lead time with you before you order.

Specifications

Customization	Available
After-sales Service	Provide
Connection	Screw
Model NO.	REJ
Kind	Corrugated Compensator
Type	Axial
Head Code	Round
Material	Carbon Steel,Stainless Steel,EPDM,NBR,Cr,PTFE,etc.
Surface Treatment	According to Customer Needs
Customized	Customized
Certification	CE, ISO14001, JIS, ISO9001, TUV, Wras, CE, Mtc, RoHS,etc
Warranty	12 Months
Application	Industrial,Water,Building,Power,Metallurgy
Product Name	Union Type Threaded Rubber Expansion Joint
Size	DN15-DN4000
Pressure	Pn6 - Pn40
Applicable Media	Air, Water, Oil, Weak Acid and Alkali, etc.
Working Temperature	-15℃-80℃(Special -30℃-150℃)
Flange Stand	DIN, ANSI, BS, ISO, JIS,etc
Test Pressure	1.5 Times of Working Pressure
Explosion Pressure	2 Times of Working Pressure
Flange Material	SS304,SS316,Carbon Steel, Ductile Iron
Rubber Material	EPDM,Nr,NBR,PTFE,etc
Certificate	ISO, TUV, Wras, Co, Mtc, etc
Transport Package	Wooden Case
Specification	DN15-DN4000
Origin	Gongyi/Henan
Production Capacity	10000pieces/Month
Package Size	120.00cm * 100.00cm * 120.00cm
Package Gross Weight	80.000kg
Advantage of rubber expansion joint	1.It excels in pressure resistance by the combination of spherical structure with super stability against internal pressure and strong special reinforcing.
Please provide us with the following information	a.Nominal Diameters
Rubber Expansion Joints Installation Manual	1) Install the joints within allowable movements of elong ation, compression, eccentricity, angular movement, etc.
Category	Other Machine & Custom Screws

Technical parameters

Material of rubber joint
No.	Name	Material
1	Outer/inner rubber	NR, NBR, EPDM, SBR, BR etc.
2	Frame	Nylon card fabric
3	Pressurized ring	Steel wire strand
4	Flange	Q235 carbon steel, 304 stainless steel etc.

Description

NPT Double Sphere Triangle Flexible Screw Union Threaded Rubber Expansion Joint is part of our other machine & custom screws range (Screws).

Key details

Type: Axial
Material: Carbon Steel,Stainless Steel,EPDM,NBR,Cr,PTFE,etc.
Size: DN15-DN4000
Surface Treatment: According to Customer Needs
Connection: Screw
Application: Industrial,Water,Building,Power,Metallurgy
Certification: CE, ISO14001, JIS, ISO9001, TUV, Wras, CE, Mtc, RoHS,etc
Kind: Corrugated Compensator

Available configurations include head code, material, surface treatment, customized and size. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request.

Ordering through Engineering Hardware & Fasteners

Minimum order is 10 sets at US$15.48 – 16.32 per set. Send one inquiry with the part number, quantity and destination, and Engineering Hardware & Fasteners confirms size, thread, material, grade, finish, price, lead time and shipping, checks the goods before dispatch and ships them to you.

Frequently asked questions

What is the minimum order quantity (MOQ) for NPT Double Sphere Triangle Flexible Screw Union Threaded Rubber Expansion Joint?

The listed minimum order is 10 sets, at US$15.48 – 16.32 per set. Smaller trial quantities or samples can be requested in your inquiry; Engineering Hardware & Fasteners confirms what is possible for your size.

How does the price change with quantity?

Volume pricing: US$16.32 for 10–199 sets; US$15.48 for 200+ sets. Final prices depend on size, material, finish and packing and are confirmed in your quote.

What are the main specifications of NPT Double Sphere Triangle Flexible Screw Union Threaded Rubber Expansion Joint?

Type: Axial; Material: Carbon Steel,Stainless Steel,EPDM,NBR,Cr,PTFE,etc.; Size: DN15-DN4000; Surface Treatment: According to Customer Needs; Connection: Screw; Application: Industrial,Water,Building,Power,Metallurgy. The full specification table and any technical parameter tables are listed on this page.

Can this product be customized (OEM)?

Listed configurations include head code, material, surface treatment, customized and size. Size, thread, length, material and grade, surface finish, head marking, packaging and labels can be quoted to your specification or drawing.

What is the lead time and how is it shipped?

Lead time depends on quantity and customization and is confirmed in your quote. Engineering Hardware & Fasteners checks the goods before dispatch and ships by express, air or sea; mixed orders can be consolidated in one shipment.

Which other other machine & custom screws are available?

The Other Machine & Custom Screws category lists 14,058 products in different sizes, materials and finishes: https://engineeringhardware.com/fastener-products/screws/other-machine-custom-screws/

How we work

Specified, checked and shipped by Engineering Hardware & Fasteners

Engineering Hardware & Fasteners supplies bolts, screws, nuts, washers, anchors, rivets and fastening hardware to equipment makers, contractors, distributors and maintenance teams. Orders go through one controlled process: size, thread, material, grade and finish confirmed, samples approved, dimensions, thread fit and plating checked before packing, then packed for export — standard or made to drawing.

DIN, ISO, ASTM, ANSI, JIS and GB standard parts
Non-standard parts made to your drawing
Dimensions, thread gauges and plating checked before packing
Export cartons and pallets, consolidated mixed orders
Samples available for approval before mass production

More about us → · Request a sample or custom quote →

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US$15.48 – 16.32MOQ 10 setsGet a quote WA