1,Product Description
High Quality Rubber O-Ring/NBR Fkm Silicone O Ring
O-rings are sealing elements that can be used statically or
dynamically in many applications.
● applicable to a wide range of pressure, temperature and clearance
● generally, the required groove space is small and light
●under correct service conditions, the service life of O-ring can
reach the material aging limit
● O-ring seal failure is generally gradual and easy to find and
judge
● the price is generally lower than other sealing forms
2,Material analysis
NBR
Temperature range: -30°C to 125°C Hardness: 40-90A Color:
Customizable Application: Excellent oil resistance Advantages:
Excellent
oil resistance and stability, widely used, affordable price
FKM
Temperature range: 20°C to 250°C Hardness: 50-90A Color:
Black/brown/green, other colors can be customized Application:
Excellent
oil and chemical resistance Advantages: Wear resistance, acid and
alkali resistance, high temperature resistance.
SILICONE
Temperature range: 60°C to 225°C Hardness: 25-90A Color:
Red/transparent (clear)/white, etc. Application: Food grade
Advantages:
Good heat resistance, cold resistance, lubricating oil resistance,
and water resistance.
EPDM
Temperature range: 50°C to 150°C Hardness: 40-90A Color:
Customizable Advantages: Excellent ozone resistance, heat
resistance,
steam resistance, cold resistance, and LLC resistance.
NR
Temperature range: -44°C to 120°C Hardness: 60-90A Color:
Customizable Advantages: Excellent mechanical strength and fatigue
resistance.
HNBR
Temperature range: -30°C to 160°C Hardness: 50-90A Color: Black,
other colors can be customized Advantages: Excellent ozone
resistance, heat resistance, mechanical strength, and electrical
resistance compared to butadiene rubber.
| Material Types and General Properties |
| <Table 1>Material types and general properties |
Item
Type | Temp.R ange("C) | Property |
| High Temp.R | Low Temp.R |
| ACM | 150 | -10 | It is used in diaphragm,hose for automotive application.Good
resistance to
heat,ozone and oil.Generally attacked by water,alcohol,glycol and
aromatic
hydrocarbons.The molecular structure contains ethyl
acrylate(EA),butyl acrylate
(BA),and ethyl acrylate(MEA).High BA content get better low
temperature
resistance,and high MEA content get more oil resistance. |
| NR | 70 | -40 | Excellent compression set,high tensile
strength,resilience,abrasion,tear
resistance,good friction characteristics,excellent bonding
capabilities to metal
substrate,and good vibration dampening characteristics |
| VMQ | 225 | 55 | The most widely temperature ranges for application.Good weather and
ozone
resistance,but poor mechanical property and chemical resistance. |
| PTFE | 250 | -150 | Due to the low friction coefficient,it is used in oil seal
lip.However,it is poor
elastic property |
| TPU | 100 | -40 | Polyurethane is one of the groups of elastic thermoplastic
materials.PU has
been used in seal technology for many years because of their
physica
characteristics.It is an organic material of high molecular weight
whose chemical
composition is characterized by a large number of urethane
groups.In addition
it is characterized by extremely good mechanical properties such as
high tensile
strength,abrasive resistance,tear strength,and extrusion
strength.However
t is not resistant to polar solvents,chlorinated
hydrocarbons,aromatics,brake
fluids,acids,and alkalis |
| FKM | | Excellent chemical resistance except ester and ketone |
| 200 | -25 | Dipolymer | Copolymer of vinylidiene fluoride and hexafluoro propylene,and
fluorine content is 66%. |
| -20 | Tripolymer | Copolymer of vinylidiene fluonide,hexafluoro propylene and
tetrafluro
ethylene.Fluorine content is 68%.Tripolymer has better fluid
resistance than dipolymer |
| XNBR | 100 | -40 | Modification of traditional NBR with the insertion of carboxyl
groups
It has better tensile strength,modulus,abrasion than NBR |
3,KELONG Rubber O-Ring Seals
| KELONG Rubber O-Ring Seals |
| Material | Hardness(Shore A) | Temperature | Size |
| Standard Size | Available |
| NBR(Buna,Nitrile) | 60-90 | 55℃-110℃ | AS-568(USA)
JIS-B2401(Japan)
DIN-3771(Germany)
BS-1516(UK)
ISO3601(International)
R(France) | ID≤2000mm
CS≤40mm |
| FKM(FPM) | 70-90 | -20℃-250℃ |
| EPDM | 60-90 | -45℃-150℃ |
| Silicone(VMQ) | 10-70 | 60℃-280℃ |
| HNBR | 60-90 | 48℃-180℃ |
| EFKM | 70-90 | -18℃-326℃ |
| PU | 90~95 | -40℃-90℃ |
| PTFE | 60~70 | -100℃-280℃ |
| Resistance | Color | Certificate | Application |
| Hydraulic Fluid | Black | IS09001 | Auto Industry |
| Engine Oil | Brown | IS014001 | Construction Machinery |
| Chemical | Red | TS16949 | Machine Tool Equipment |
| Ozone | Green | RoHS | Food Health |
| Steam & Hot Water | White | REACH | Water Treatment |
| Low Temperature | Blue | FDA | Chemical Processing |
| High Temperature | Clear | SGS | Hydraulic Pneumatic |
| Customized | | Industrial Manufaturing |
4,The O-ring Seal
The O-ring is suitable to be installed on various mechanical
equipment to seal at the specified temperature, pressure and
different liquid and gas media in the static or moving state.
Various types of sealing elements are widely used in machine
tools,ships, automobiles, aerospace equipment, metallurgical
machinery, chemical machinery, engineering machinery, construction
machinery, mining machinery, petroleum machinery, plastic
machinery, agricultural machinery, and various instruments and
meters.
O-ring is mainly used for static seal and reciprocating seal. When
used for rotary motion sealing, it is limited to low-speed rotary
sealing device. The O-ring is generally installed in the groove
with rectangular section on the outer circle or inner circle to
seal. The O-ring still plays a good role in sealing and shock
absorption in the environment of oil resistance,acid-base, wear,
chemical erosion and so on. Therefore, O-ring is the most widely
used seal in hydraulic and pneumatic transmission system.
