High-Quality Aramid Fiber Ring Non Asbestos Aramid Rubber Gasket for Flange Sealing

• Material: Af/NBR
• Application: Heave-Duty Application
• Type: Rotary Seal
• Model NO.: Non Asbestos Aramid Rubber Gasket
• Performance: Oil Resistance
• Shape: O-Ring
• Standard: Standard, Nonstandard
• Density(g/cm3): 1.6 -2.0
• Tensile Strength, AMD(MPa): ≥8.0
• Compressibility(34.5 MPa): ≥7.0
• Sample: Accept
• Transport Package: Carton Box, and Wooden Boxes
• Specification: millions of sizes for moulds
• Trademark: CHUNHUAN
• Origin: China
• HS Code: 3920991000
• Production Capacity: 2000PCS Per Day
• Package Size: 10.00cm * 10.00cm * 2.00cm
• Package Gross Weight: 1.000kg

Product Description

Product Description

Non Asbestos Aramid rubber Gasket AF/NBR Gasket

Conditions for Non-Metal Flat Gaskets

Item	Materials	Standard	User Range		Max
			PN	Working (ºC)	(Mpa*ºC)
Rubber	NR		≤16	-50→+80	60
	CR		≤16	-20→+100	60
	NBR		≤16	-20→+110	60
	SBR		≤16	-20→+90	60
	EPDM		≤16	-30→+140	90
	FKM		≤16	-20→+200	90
Asbestos Rubber	XB350	GB/T 3985	≤25	-40→+300	650
	XB450
Non-Asbestos Fiber Rubber	NAS		≤40	-40→+290	960
PTFE	PTFE
	ePTFE
	RPTFE
RSB		JB/T 6628 JB/T 7758.2	10--63	-240→+650	1200

Specification

DN	D1	D2							T	b
		PN
		2.5	6	10	16	25	40	63
10	18	39	39	46	46	46	46	56	1.5	3
15	22	44	44	51	51	51	51	61
20	27	54	54	61	61	61	61	72
25	34	64	64	71	71	71	71	82
32	43	76	76	82	82	82	82	88
40	49	86	86	92	92	92	92	103
50	61	96	96	107	107	107	107	113
65	77	116	116	127	127	127	127	138
80	89	132	132	142	142	142	142	148
100	115	152	152	162	162	168	168	174
125	141	182	182	192	192	194	194	210
150	169	207	207	218	218	224	224	247
200	220	262	262	273	273	284	290	309
250	273	317	317	328	329	340	352	364
300	324	373	373	378	384	400	417	424
350	377	423	423	438	444	457	474	486	3
400	426	473	473	489	495	514	546	543
450	480	528	528	539	555	564	571
500	530	578	578	594	617	624	628
600	630	679	679	695	734	731	747
700	720	784	784	810	804	833				4
800	820	890	890	917	911	942
900	920	990	990	1017	1011	1042
1000	1020	1090	1090	1124	1128	1152
1200	1220	1290	1307	1341	1342	1364				5
1400	1422	1490	1524	1548	1542
1600	1626	1700	1724	1772	1764
1800	1829	1900	1931	1972	1964
2000	2032	2100	2138	2182	2168

Our Service
1)Your inquiry will be replied within 2 hours during working time,Within 24hours when rest time.
2)Our working time is 7.30 AM --17:30 PM,Monday to Saturday.
3)General samples time can be arranged within 2--5days.
4)Orders will be produced exactly as request and approved samples.
5)When mass production,we send photos to show the production line.And confirm the estimate time again.
6)At the end of mass production,photos and samples will send to you for approval.You can arrange the inspection.
7)Before shipment,our QC will have inspection to make sure the quality.
8)We always try best to ensure every order to delivery in time.
 
Payment Terms
1)T/T,Cash,L/C.
2)30% deposit,70% balance before shipment.
3)Lead time: 15 days after received deposited for 2tons.
4)Delivery way: By sea,By air, By EMS,DHL,UPS,TNT,FedEx.
 
Packing & Delivery
For sample: By EMS,DHL,UPS,TNT,FedEx
                 around 5--7 working days to arrive
 
For Bulk order:
1.Qty of 2tons,within 15 days.
2.Via Sea
3.Delivery time:we will finish production in 15days for 2tons.
4.For 20 GP,may nee around 30days.

Product Application

Company Profile

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: What are the real advantages of a non-asbestos aramid fiber gasket compared to a traditional asbestos gasket?
A: Firstly, it is completely asbestos-free, making it an environmentally friendly material that is safe for both people and the planet. It meets modern industrial environmental requirements and can be confidently exported to regions like Europe and America where asbestos is strictly restricted. In terms of performance, it not only rivals asbestos but excels in many areas-it has excellent compression resilience, allowing it to adapt to minor deformations on flange faces for a long-term seal. Its high-temperature resistance and corrosion resistance are also outstanding, making it a true substitute that surpasses traditional asbestos products.

2. Q: My application involves both high temperatures and oily media. Can this gasket handle it?
A: Absolutely. The non-asbestos aramid fiber gasket is precisely designed for such complex conditions. Made from a composite of aramid fiber and oil-resistant materials like NBR (Nitrile Butadiene Rubber), it offers exceptional resistance to oil and corrosion, withstanding various media like gasoline, lubricants, and solvents. It also has good heat resistance, typically operating stably in environments ranging from 200°C to 350°C, meeting most industrial high-temperature requirements.

3. Q: This gasket looks a bit brittle. Is it prone to breaking during installation? Will that affect the seal?
A: That's a very observant question. Compared to asbestos gaskets, the different fiber ratio in non-asbestos gaskets can make them feel slightly crisper. However, this doesn't mean they aren't strong! Quite the opposite-aramid fibers themselves have incredibly high strength, giving the gasket excellent tensile strength and compressive resistance, allowing it to withstand high pressure without being crushed. As long as it is installed according to standard procedures with uniform pre-tightening, it will deliver outstanding sealing performance.

4. Q: Can this gasket be custom-made? I need non-standard sizes or thicknesses.
A: Of course. We support custom fabrication based on drawings to meet your various non-standard requirements. The standard thickness range is typically from 0.5mm to 5.0mm. Please note that for applications requiring particularly thick gaskets (e.g., over 3mm), we may offer professional advice based on your specific conditions to ensure the best sealing performance, considering the material's physical properties. We also provide large sheets for you to cut yourself.

5. Q: Can this gasket be used in chemical pipelines or valves? Is it resistant to strong acids and bases?
A: Non-asbestos aramid fiber gaskets are widely used in pipelines, valves, and heat exchangers within the petrochemical and chemical industries. They have excellent chemical stability and can resist many acids, alkalis, solvents, and chemical media. However, for extremely corrosive media, we might recommend gaskets made from PTFE (Polytetrafluoroethylene) to meet the demands of more severe conditions.

6. Q: Do you have models suitable for the food or pharmaceutical industries? They need to meet food-grade standards.
A: Yes. For industries like food and pharmaceuticals with high purity and safety requirements, we offer gasket materials certified to FDA or equivalent food-grade standards. These products ensure the media remains pure and uncontaminated while maintaining excellent sealing performance, fully complying with industry hygiene regulations. Please let us know your specific application before ordering, and we can recommend the most suitable material grade.

7. Q: What is the pressure rating for this gasket? Can it be used in high-pressure environments?
A: Non-asbestos aramid fiber gaskets have good pressure resistance and typically withstand pressures of 6.5 MPa or even higher. High-quality products can have a working pressure of up to 100 bar. Their tensile strength and resistance to high pressure are sufficient for most industrial pipeline and equipment requirements. To be absolutely sure, please provide your specific pressure parameters, and we can verify they fall within the product's safe operating range.

8. Q: Are there any special tips for installing this type of gasket to ensure it doesn't leak?
A: Installation quality directly determines sealing effectiveness. First, thoroughly clean the flange faces, ensuring they are free of scratches and debris. Second, do not exceed the specified preload force, as this can crush the gasket and destroy its resilience. We recommend using a torque wrench and tightening in 2-3 passes following a sequential, cross-pattern to ensure even stress distribution. Finally, remember that gaskets are single-use consumables-they must be replaced after disassembly and never reused, to prevent leaks caused by stress relaxation or media contamination.