Factory Direct Offer Rubber Edpm + PTFE Sealing Gasket

• Style: Mechanical Seal
• Function: Fixed Sealing, Hole Sealing, Rotary Sealing, Nozzle Ring Sealing, Shaft Sealing, Dust Prevention Sealing
• Application: Auxiliary Seal, Junction Surface Seal, Equipment Seal, Flange Seal, Hydroseal, Pump Seal
• Model NO.: gasket
• Shape (For Gasket): Flat Gasket
• Material: EPDM + PTFE
• Standard: Standard
• Wide Temperature Range: -50°c to +260°c
• Chemical Resistance: Highly Corrosive Environments
• Lifespan: Anti-Aging and Low Wear
• Pressure Range: Static Sealing ≤25 MPa; Dynamic Sealing ≤15
• Compression Rate: 15-25%
• Rebound Rate: ≥85%
• Transport Package: Wooden Boxes and Can as Your Request
• Specification: as your request
• Trademark: chunhuan
• Origin: Zhenjiang
• HS Code: 39209910
• Production Capacity: 50000PCS/Month
• Package Size: 200.00cm * 100.00cm * 100.00cm
• Package Gross Weight: 800.000kg

Product Description

Product Description

EPDM coated PTFE composite gasket Acid and alkali resistance JIS 

Produced by using EPDM or NBR as the main body, and is compounded with the pure PTFE outer , treated by the activation treatment at the effective sealing part. The product reduces the cold flow of the gasket, and the anti-blow resistance of the gasket is increased, so that the gasket has good rigidity and compression, rebound and compensation, and can meet the higher pressure and the working condition ratio.
 

Applications:
Widely used in electronic industry, chemical and pharmaceutical plants

Acid and alkali resistant:
Chemical resistant. 
has minimum friction coefficient of all know pure material. 
Non-viscous, no aging. 
Now molds can be made according to customers requirements.

Main Properties:

Item	Unit
Tensile Strength	Value	more than 25.5
Stripped Out Strength	Mpa	more than 39*102
Hardness of rubber	N/m	65°+/- 5°
Compressibility		more than 25
Recovery	%	more than 30
Stress Release Rate(150ºC/16h)	%	less than 45
Leakage Rate	Cm3/s	1*10-3
Temperature	ºC	130
Pressure	Bar	25

Specifications:

Dia	10kg = 1.0Mpa					Dia	16kg=1.6Mpa
	OD	d	dia	holes	T		OD	d	dia	holes	T
DN10	50	60	14	4	14	DN10	90	60	14	4	14
DN15	59	65	14	4	14	DN15	95	65	14	4	14
DN20	105	75	14	4	16	DN20	105	75	14	4	16
DN25	115	85	14	4	16	DN25	115	85	14	4	16
DN32	140	100	18	4	18	DN32	140	100	18	4	18
DN40	150	110	18	4	18	DN40	150	110	18	4	18
DN50	165	125	18	4	20	DN50	165	125	18	4	20
DN65	185	145	18	4	20	DN65	185	145	18	4	20
DN80	200	160	18	8	20	DN80	200	160	18	8	20
DN100	220	180	18	8	22	DN100	220	180	18	8	22
DN125	250	210	18	8	22	DN125	250	210	18	8	22
DN150	285	240	22	8	24	DN150	285	240	22	8	24
DN200	340	295	22	8	24	DN200	340	295	22	8	26
DN250	395	350	22	12	26	DN250	405	355	26	12	29
DN300	445	400	22	12	28	DN300	460	410	26	12	32
DN350	505	460	22	16	30	DN350	520	470	26	16	35
DN400	565	515	22	16	32	DN400	580	525	30	16	38
DN450	615	565	26	20	35	DN450	640	585	30	20	42
DN500	670	620	26	20	38	DN500	715	650	33	20	46
DN600	780	725	26	20	42	DN600	840	770	36	20	52

Product Application

Chunhuan Group (Zhenjiang Chunhuan Sealing Group Co., Ltd.),established in 1985, is a leading manufacturer of fluoroplastic products, chemical semiconductor linings, and new energy sealing gaskets.The company primarily focuses on the research, development, and production of fluoroplastic series sealing products (for hydrogen energy and nuclear power applications) and chemical semiconductor linings.With subsidiaries in South Korea and Shanghai, the group has also established a joint venture with South Korea's Houcheng Group for semiconductor lining equipment. Main production:PTFE products,metal seals series,steel lining anti-corrosion series, engineering plastics series,rubber products series,it is the leading enterprise in the national fluoroplastics industry.The company  supplies  more  than 300 varieties of PTFE composite modified materials,ranging from standard composite modified materials (bronze,glass fiber,carbon,graphite,etc.)to  customized solutions  to meet different  production needs of customers.The  company provides flexible quantity and fast delivery service.The engineers have 35 years working experience in the field of PTFE,serving customers in more than 30 countries.

Our Advantages

Certifications

Packaging & Shipping

FAQ

1.Q: How to distinguish pure PTFE from filled PTFE sheets?
   A: Pure PTFE is white without additives (labeled "Virgin PTFE") ; filled types specify additives and may appear gray/off-white.
 
2. Q: Are the products certified with international standards ?
   A: Pure PTFE complies with FDA . Filled types depend on formulations.  

3. Q:  Can I request samples?
   A: Free 20×20cm samples are provided (shipping cost paid by buyer).  

4. Q: What is the lead time for custom sizes/thickness?  
   A: Standard sizes ship in 7 days; custom orders take 15-30 days (based on complexity).  

5. Q: How to verify chemical resistance data?
   A: Third-party test reports.  

6. Q: What is the packaging ?  
   A: With wooden crates, suitable for sea/air freight.  

7. Q: Will harmful substances be released ?  
   A: Pure PTFE is stable up to 250ºC; filled types require additive verification.  

8. Q: Can you deburr sheet edges or provide precision machining?  
   A: Standard sheets are rough-cut; CNC finishing (±0.1mm tolerance) is available at additional cost.  

9. Q: What if the product fails performance tests after delivery?  
    A: Disputes within 15 days require third-party test reports. Confirmed issues trigger free replacement or refund.