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K78

 

 Application: 

not bolded symbols; please consult our technical for application limitations

 

 

Category of profile:  

molded/standard/trade product or machined with minor design change.

 

Single acting

 

the K78 seal is designed for use as a piston seal - either single or double acting where two seals are used ‘back to back’. 

 



 

 

 

 

Operating parameters & material

 

 

material

temperature

max. surface speed

max. pressure1

sealing element

energizer

back-up ring

s-mart NBR

NBR-inpregn. fabric

s-mart POM

-30 °C ... +100 °C

0,5 m/s

400 bar (40 MPa)

 

the stated operation conditions represent general indications. it is recommended not to use all maximum values simultaneously. Surface speed limits apply only to the presence of adequate lubrication film.

  1 pressure ratings are dependent on the size of the extrusion gap.

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KÍCH THƯỚC TIÊU CHUẨN (mm)

 

Code D d H L
K78.17x10x6 17 10 6 6.3
K78.22x14x6 22 14 6 6.3
K78.23x15x6 23 15 6 6.3
K78.27x20x6.2 27 20 6.2 6.5
K78.28x20x6 28 20 6 6.3
K78.28x20x6.7 28 20 6.7 7
K78.30x22x6.2 30 22 6.2 6.5
K78.32x20x9.7 32 20 9.7 10
K78.32x22x5.7 32 22 5.7 6
K78.32x22x9.7 32 22 9.7 10
K78.38x30x5.7 38 30 5.7 6
K78.40x30x6.7 40 30 6.7 7
K78.40x30x7.2 40 30 7.2 7.5
K78.40x32x5.2 40 32 5.2 5.5
K78.40x32x5.7 40 32 5.7 6
K78.43x35x5.7 43 35 5.7 6
K78.44x36x6 44 36 6 6.3
K78.50x40x6.7 50 40 6.7 7
K78.50x42x5.7 50 42 5.7 6
K78.55x45x7.7 55 45 7.7 8
K78.57x45x9.2 57 45 9.2 9.5

KÍCH THƯỚC TIÊU CHUẨN (mm)

 

Code D d H L
K78.60x40x9.7 60 40 9.7 10
K78.60x45x11.7 60 45 11.7 12
K78.60x48x9.7 60 48 9.7 10
K78.60x48x10.2 60 48 10.2 10.5
K78.60x50x9.7 60 50 9.7 10
K78.70x60x7.2 70 60 7.2 7.5
K78.72x60x9.2 72 60 9.2 9.5
K78.80x70x7.2 80 70 7.2 7.5
K78.82x70x8.7 82 70 8.7 9
K78.85x70x7.7 85 70 7.7 8
K78.85x75x7.2 85 75 7.2 7.5
K78.87x75x9 87 75 9 9.3
K78.92x80x8.7 92 80 8.7 9
K78.96x80x9.7 96 80 9.7 10
K78.100x80x13.7 100 80 13.7 14
K78.110x90x12.2 110 90 12.2 12.5
K78.115x100x11.7 115 100 11.7 12
K78.120x100x13.7 120 100 13.7 14
K78.125x110x11.7 125 110 11.7 12
K78.130x110x11.7 130 110 11.7 12