Adresse : No 99 qiansan rd,fenglinmei,Jimei District
Téléphone : +86-592-5166561
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Item name
back up ring
Material
PTFE
Size
AS568,JIS;BS;VSPG,Nonstandard or customized
Temperature
NBR:-40~125 cesus; VITON:-25~250 cesus;
Certificate
SGS;ROHS;REACH;DNV;TS16949
Color
Pantone code available
Special features
Oil-resistant;heat-resistant;abrasion-resistant;anti-aging;insulation;acid alkali resistant;airtight;shock-absorption;etc
Port
Xiamen,Shanghai,Ningbo or other port in China mainland
Trade terms
FOB;CNF;CIF;DDU
Delivery time
15 days after receiving the comfirmation of sample or according to customer quantity
Payment term
T/T or PAYPAL or Western union or Money gram.
30% deposit,70%before shipment
MOQ
1000 pcs or according to size
Package
Inside PE bag and outside carton
Sample lead time
Within 3 days
Carton size
Large:L46cm*W38cm*H26cm
Medium:L45cm*W21cm*H30cm
Small:L25cm*W25cm*H25cm
OEM/ODM
welcome
In a sealing application, backup rings provide added extrusion
resistance, and prevent damage to O-rings and seals when subjected to high
pressures, larger extrusion gaps, and/or high temperatures.
Extrusion failure is one of the most common types of O-ring
failure. When the internal pressure of an application becomes too great, the
O-ring will actually extrude into the clearance gap. This extrudate will
quickly be nibbled away causing a loss of material, and once sufficient
material is lost, seal failure will quickly follow.
There are three options to prevent this, the first of which is
to reduce the clearances to lower the extrusion gap. This is obviously an
expensive option, so a cheaper solution is to raise the durometer of the
O-ring. Even though a higher durometer O-ring offers superior extrusion
resistance, this is often not a feasible solution due to material availability,
and to the fact that harder durometer materials have limited low pressure
sealing ability. The last and best option is the addition of a backup ring. A
backup ring is a ring of hard, extrusion resistant material such as high
durometer nitrile, Viton (FFKM), or PTFE.
A back-up ring is designed to fit between the
O-ring and the extrusion gap and prevent the extrusion of the O-ring. Depending
upon the direction of pressure in the sealing application, you can either use 1
backup ring or 2 backup rings. If unsure, it is always best to use two backup
rings per 1 o-ring.
Nitril EPDM Silicone FKM rubber o ring seal
1,Compound from world class suppliers, NBR, EPDM, VITON (FKM), HNBR, etc material and pantone code available, hardness from 30 to 95 Sh
Nitrile 40 rubber o ring seal for excavator
O Ring:
1,Compound from world class suppliers, NBR, EPDM, VITON (FKM), HNBR, etc material and pantone code available, hardness from 30 to 95 Sho
Nitrile Rubber (NBR) 60 Duro O-Ring Seal
1,Compound from world class suppliers, NBR, EPDM, VITON (FKM), HNBR, etc material and pantone code available, hardness from 30 to 95 Shore
Nitrile Rubber (NBR) 80 Duro O-Ring Seal
1,Compound from world class suppliers, NBR, EPDM, VITON (FKM), HNBR, etc material and pantone code available, hardness from 30 to 95 Shore
Nitrile Rubber (NBR) 90 Duro O-Ring Seal
1,Compound from world class suppliers, NBR, EPDM, VITON (FKM), HNBR, etc material and pantone code available, hardness from 30 to 95 Shore
Item name
NORSOK M710 o ring
Material
VITON,HNBR
Size
O-ring various size and color
1, pressed by mould vulcanization, ID from 0.5mm to 1000mm and C/S from 0.5mm to 20mm by mould Vulcanization, ID from 3mm to 20mm and C/S from 500mm to 6000mm by S
O-ring various size and color
1, pressed by mould vulcanization, ID from 0.5mm to 1000mm and C/S from 0.5mm to 20mm by mould Vulcanization, ID from 3mm to 20mm and C/S from 500mm to 6000mm by S
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