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The U Shaped Rubber Seal has a symmetrically configured seal lip for single - or double-acting standard cylinders of piston rods or pistons. The U-shaped sealing ring is a sealing ring that acts as a seal. Because its cross-section is U-shaped, it is called U-ring, the English name U-ring.
U-shaped sealing ring is used for hydraulic, transmission, cylinder and other reciprocating movement of the
single acting seal, with the following characteristics:
1.Balanced seal, sealed inside and outside diameter, with support ring protection seal to prevent squishing or twisting.
2.Seal into the slot, lips shall not contact the pressure ring, the use of self-tightening principle for sealing.
3.Hydraulic cylinder for piston rod or piston.
4.The section shape is U-shaped, which can be used for outer circle sealing and inner circle sealing.
5.Used in chemical, oil, natural ga s, electric power and other industrial fields.EPDM U Shaped Rubber Seal (Ethylene Propylen) Selection Guide
EPDM U Shaped Rubber Seal, or ethylene propylen U Shaped Rubber Seal, are a family of synthetic elastomers
with lower cost steam and chemical resistance, particularly for applications involving solvents, acids and
other mild chemicals. ORK Rubber has the world's largest inventory network of EPDM U Shaped Rubber Seal
and made on demand custom manufacturing often without tooling fees, so the EPDM U Shaped Rubber Seal
you need are always available. Whether it's for water systems, braking systems, medical, pharmaceutical,
food or dairy use, you can count on ORK Rubber to deliver your U Shaped Rubber Seal fast and efficiently.
EPDM U Shaped Rubber Seal from ORK Rubber are in-stock and ready to ship (custom specifications can
typically be accommodated with no additional tooling fees within a few weeks). Leverage the direct
pricing power of the world's largest Valve Rubber Seal inventory network and order EPDM U Shaped Rubber
Seal online today!Common Names
EPDM, Ethylene Propylen Diene Monomer RubberTypical Applications and Products
Ethylene-Propylen rubbers make up a family of synthetic elastomers characterized by excellent chemical
and thermal resistance. EPDM materials are most commonly used in applications involving solvents, acids,
brake fluids, and other aggressive chemicals. It is also known for its resistance to high temperature steam.
EPDM has very poor compatibility with most mineral and petroleum based oils and is seldom used in those
applications.
Specialty Resistances
·Resistant to acids
·Resistant to bases
·Resistant to steam
·Resistant to greases
·Resistant to phosphate ester hydraulic fluids
·Resistant to weathering and sunlight
·Resistant to silicone oils
·Resistant to glycol brake fluids (DOT 3, 4, 5.1)
·Resistant to cleaning agents
·Resistant to ketones
·Resistant to brake fluids
·Resistant to some acids
·Resistant to steam <300ºF
Limitations
·Not resistant to alternative fuels
·Not resistant to common fuels
·Not resistant to mineral oils
·Not resistant to aliphatic hydrocarbons
·Not resistant to aromatic hydrocarbons
·Not resistant to petroleum oils
·Not resistant to concentrated acids
·Not resistant to halogenated solvents
·Not resistant to non-polar solvents
·Not resistant to kerosen
Mechanical Properties
Good Compression Set Resistance Good Heat Stability Fair Shorter Term Resilience Good Permeation Resistance Excellent Electrical Insulator
Different elastomers have different compatibility with various chemical elements and their characteristics. See the table below for more material knowledge to order the most cost-effective o-rings from us.Material Hardness
(Shore A)Temperature
(ºC)Main Color Advantage Price Level Shelf Life
(Years)NBR / Nitrile / Buna-N 60-90 -40 - 120 Black Good oil resistance & low price Low 5-10 HNBR / HSN 60-90 -40 - 150 Green Suitable for the cooling industry High 5-10 FKM / FPM 70-90 -20 - 200 Brown High-temperature & chemical resistance High About 20 EPDM / EPR 50-90 -50 - 150 Black Excellent weather & ageing resistance Fair 5-10 VMQ / Silicone 40-80 -70 - 220 Red High-temperature & FDA food grade High About 20 Neoprene / CR 50-90 -40 - 120 Black Versatility Properties Fair 5-10 FFKM 70-90 -10 - 320 Black Excellent chemical & high-temperature Highest About 20 FVMQ / Fluorosilicone 40-80 -60 - 200 Blue Wider operating temperature range High About 20 Aflas / FEPM 40-90 -2 - 230 Black Good chemical compatibility Higher About 20 PU / polyurethane 60-90 -40 - 90 Natural High strength and wear resistance High About 10
We have certificates :ISO 9001:2015 , ISO 14001:2015 ,ISO 45001:2018 , IATF 16949 , FDA, REACH, ROHS, SGS etc.
1. Since 2006, focus on rubber seals, especially for auto parts
2. Certificates: ISO9001, IATF16949, ISO14001, ISO45001,ISO 13485
3. Two factories, more than 18000M2,clean room 600M2, with 300 workers.
4. Molds > 10000 sets, especially o rings, about 5000 sets.
5.O-ring series covers American standard (AS568), Japanese standard (JIS), national
standard(GB), and produces a large number of customized non-standard parts.
6. Material: NBR, FKM, SIL, EPDM, CR, NR, PU, HNBR, FFKM, SBR .The rubber materials
used meet the requirements of ROHS2.0 and REACH235.
7. Material Certificates: FDA, ROHS, REACH, UL157, CP65 WRC, EN549,EN45545.
8. Products are widely used in automotive parts, electronic connectors, valves, pneumatics,
power tools, new energy, medical equipment, electronic products and other fields.
Design
Mold Making
Samples Testing
Mass Production
Proceed with mass production strictly according to the confirmed samples. Deliver the finished products to the customer via express shipping worldwide.
Ruichen always meets our customers' requirements. To make sure we produce high-quality o-rings, our company implements the
following general standards:
1) Raw material incoming inspection standard ASTM D2000 & HG/T 2579-2008 & HG/T 2811-1996
2) Public o-ring dimensional tolerance GB/T 3452.1-2005
3) N-level specification for o-ring appearance quality inspection GB/T 3452.2-2007
4) Hardness measurement model Micro O-Ring Testing (Type M system)
5) Hardness using standard ASTM D2240 Rubber Standard Test Method (Shore A)
6) Sampling inspection specification GB/T2828.1-20
Ruichen company have cooperated with many superior customers as below , we have complete system and excellent productivity
to serve for you
Why RUICHEN?
Many big companies select RUICHEN for their rubber seals and customized rubber parts because we always
satisfy them in quality, price, delivery, service, etc. At the same time, we also attach great importance to the
small customers in niche markets.Whether your purchase quantity is big or small, you are our valuable partners.
High Quality
We continue to manufacture high-quality products for all customers and pursue 100% customer satisfaction,
which has become one of our core competencies.
Profession
We have rich experience in materials, products, and production and excellent international trade and language
communication skills.
Best Services
From quoting, sampling, production, and shipping to after-sales, our sales will provide you with the best service
so that you can rest assured completely.
10000+ Projects Delivered
Over 10K projects have been sent to our customers worldwide in recent years, and we have received countless
positive comments.
Low Price
Our customers can obtain maximum profits through the ISO management system and intelligent manufacturing
to reduce our costs continuously.
Massive Capacity
Our in-house facilities allow us to get your projects done fast. And thanks to our strong relationship with rapid
materials partners, our capacity is not limited.
Fast Delivery
Unlimited capacity, experienced engineers, and a flexible production system allow us to create your seals and
production parts in a short period.
1000+ Happy Customers
We aim to keep every customer happy with reliable quality, fast turnaround, and excellent services. We want all
our new customers to become long-term customers.
We can also produce Automotive Rubber Seals ,Connector Rubber Seals ,Power Tool Rubber seals ,Valve Rubber Seals ,Pipe Rubber Seals ,Semiconductor Rubber Seals ,Hydraulic Pneumatic Rubber Seals ,Pump Rubber Seals ,Oil and Gas Seals ,Food Grade Rubber Seals ,Medical Rubber Seals ,Chemical Equipment Rubber Seals ...etc.
FAQ
Q: 1 What kinds of materials can you provide?
A: NBR, EPDM, SILICONE,FKM(FKM),NEOPRENE(CR), HNBR ,NR, IIR, SBR, ACM, AEM,Fluorosilicone(FVMQ),
FFKM etc.
Q: 2 How to select the raw compound for my application?
A: With years of experience working with a variety of material, we can help select the material that will best suit your
needs while keeping material costs in mind.
Q: 3 How long can we get the quote?
A: If your information is complete, we will provide the quotation within 8 hours.
Q: 4 Can you provide samples? Is it free or extra?
A: Yes, we can provide samples for free. Freight can be negotiated.
Q: 5 What is the normal lead time for product orders?
A: If the stock generally takes 3-7 days, mold about 15-18 days, no mold about 25-30 days, depending on the product
situation.
Q: 6 How to check the quality of the bulk order?
A: We have incoming inspection, control the quality of raw materials, process inspection,to ensure the quality of the
production process, shipping 100% of the full inspection; automatic inspection machine full inspection, and according
to customer needs before the mass production of pre-production samples.
Q: 7 What is your standard packing?
A: Plastic bag for inner packing .carton box for outer packing also be packed according to customer's requirements.
Q: 8 What's the payment term?
A: We accept T/T 30% deposit and 70% balance , Paypal is also ok.
