DuPont Original Kalrez O-ring

Application
Dupont Kalrez O-ring can be applied in the industry of semiconductor, petrochemical and chemical, oil and gas production, and pharmaceuticals and food.

Performance
1. Perfluoro rubber is invented by Dupont, a famous company in America.
2. Dupont O-ring is the only product that the time of application is more than 30 years. It is proved a long-term reliable and secure product in a variety of harsh sealing conditions.
3. Dupont Kalrez O-ring is the only product that all the parts from rubber to finished product are controlled by DuPont. Thus long-term stability is guaranteed.
4. Dupont O-ring is of high temperature, high pressure and high heat resistance. The maximum temperature can reach 327℃.
5. Its chemical property is stable, resistant to hydrogen sulfide, benzene, oil, strong acid and alkali.
6. Dupont Kalrez O-ring features excellent tensile strength (15-20MPa), and superior sustained sealing ability.

Standards of Dupont Kalrez O-ring
Japanese Industrial Standard: JIS (P/G/V/S/NW)
American National Standards Institute: AS-568A
European standard: K

Technical Parameters of Dupont Kalrez O-ring

Property	Unit	Kalrez 6375	Kalrez 4079
Tensile Strength	MPa	15.1	16.9
kgf/cm2	154	172	\
100% Modulus	Mpa	7.2	7.3
kgf/cm2	73.4	74	\
Tensile Elongation	%	160	150
Hardness	HS	75	75
Heat Resistance Temperature	℃	275	316
70 hr in Room Temperature	\	\	22
70 hr at 204℃	\	30	25

Specification of Dupont Kalrez O-ring

1050L F

Hardness (shore A): 82
Heat Resistance Temperature (℃): 288
This Dupont Kalrez O-ring is the most suitable material of Amino compound, featuring hot water and general chemicals resistance, and heat resistance.

2035

Hardness (shore A): 85
Heat Resistance Temperature (℃): 220
This Dupont O-ring suits the environment of below 200℃.

3018

Hardness (shore A): 91
Heat Resistance Temperature (℃): 288
This Dupont Kalrez O-ring is the highest hardness material.

4079

Hardness (shore A): 75
Heat Resistance Temperature (℃): 316
This Dupont O-ring has excellent chemical resistance. When used at high temperature, it has excellent compression and deformation characteristics. Pay special attention to the application of amino compounds, the temperature should below 280℃ under the thermal cycle circumstances.

6375

Hardness (shore A): 75
Heat Resistance Temperature (℃): 275
This Dupont Kalrez O-ring has the most extensive chemical resistance properties. It can resist many chemical mediators coexistence. And 260℃ hot water and steam is appropriate.

7075

Hardness (shore A): 75
Heat Resistance Temperature (℃): 327
7075 is a new product on the basis of the 4079. Compared with 4079, 7075 Kalrez ring’s compression and deformation rate is smaller, and the sealing ability is better. It can be used in 327℃ high temperature environment.