1,Product Description
Manufacturer's High Temperature Resistance U-packing UN/UHS/UNS
Hydraulic Oil Seals PU Piston Seal
High-quality raw materials
We use brand new raw materials to ensure that our products are
full, elastic, environmentally friendly, non-toxic, and compliant
with standards.
Accurate dimensions
Easy to install, good sealing performance, and quality guaranteed.
Complete range of sizes
Adequate stock with a variety of specifications to meet different
usage needs.
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,Application scenarios
Light and medium load hydraulic reciprocated sealing system. Widely
used at industries such as mobile machinery, light machine,
agricultural machinery, injection moulding machinery, forklifts,
cranes, automobiles, forestry machinery and mining machinery, etc.
Favorable mechanical characteristics even under tough working
conditions.
4,product features
- high wear resistance, low pressure deformation and excellent
anti-extrusion performance - tear resistance especially in bending
and tensile - easy installation
