Urethane Die Spring

PEPSEN urethane Die Springs are designed primarily for applications where corrosion, vibration, and magnetism prevent the use of
conventional steel springs. Also, urethane Die Springs have proven to be the safest, most efficient and reliable compression
springs for punching, stamping and drawing dies.


As compared to conventional springs, the advantages of the urethane Die Spring include the following:
High load-carrying capability
High dielectric strength and non-magnetic
Protection against marring/galling
Longer life
Abrasion resistance
Oil and solvent resistance
Low noise
Vibration damping and shock absorbance
100% load-bearing surface
Bondable to mating parts

Application Specific Polyurethane Formulation for:

1)Abrasion resistant

2)High rebound

3)Low compression set

4)High load capacity

5)High temperature

6)Excellent dynamic mechanical formulation

7)Oil resistance

8)Solvent resistance

9)Hydrolysis resistance

10)Fire retardancy , anti-static, antioxidant, mildew resistance, anti-aging, lubrication and many more…

1)Quick response in 12 hours

2)Reliable imported raw material 

3)Strict analysis and testings on raw material before production

4)Assistance from first idea through prototype

5)First prototype inspection after mould and before volume production

6)Quick delivery of prototypes or production needs

7)Design assistance and parts consolidation

8)In-house mold design (Insert, polyurethane, urethane molding)

9)In-house formulations to provide the best possible urethane for your application

10)Low-cost tooling

11)Over 20 years of in-house experience

12)Reliable after-sales service and support

Shanghai Pepsen Polyurethane Co., Ltd. (ISO9001:2008 Certified manufacturer, audited by Bureau Veritas , registered capital of RMB 5 million, over 3400 square meters of manufacturing floor space) was established in 1997, located in Shanghai, China. PEPSEN specializes in researching and manufacturing high performance standard and custom mold casting polyurethane elastomer products. Moreover, PEPSEN manufactures some polyurethane products that meet SGS and RoHS approved material specifications. Trust us! PEPSEN engineering staffs have more than 20 years experience of custom casting molded polyurethane production. 

Our Team 

Q1: Are you Factory?

A1: Yes, we are a factory focusing on polyurethane for 20 years.



Q2: How many workers in your factory?

A2: We have 85 workers and 80% of them have been working for us over 5 years.



Q3: Are customized and small order available?

A3: Yes, samples or drawings are enough. Either 1pcs or 1000pcs are available.



Q4: How do you make QC control?

A4: We have 10 inspectors inspect from raw material, sample, operation, semi-product to final product.



Q5: How do you deal with complaint from customers?

A5: We replace order or make reimbursement if it is our responsibilities.