DMS SEALS TECHNOLOGY CO.,LIMITED

DMS Seals-Mechanical Seals and Oil Ring Seals Manufacturer

The Professional Sealing Solution Supplier(O Ring Suppliers & Oil Seal Manufacturers).

Mail to: sales@dmsseals.com

TEL:+86-757-86235767

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Home  > PRODUCTS  > O-Ring kits  >  FOR HITACHI MODELS OR-KIT012 NBR90 612PCS
FOR HITACHI MODELS OR-KIT012 NBR90 612PCS

FOR HITACHI MODELS OR-KIT012 NBR90 612PCS

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Product Description
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1. Performance and use

O-rings are the most used seals in actual production and life, which can seal one-way pressure, two-way pressure or alternating pressure.

It is mainly used for static seals, and a small part of dynamic seals (often pneumatic reciprocating motion) are also used. In dynamic applications, it is only recommended for better conditions. In rotary motion, if the pressure is low and the lubrication is sufficient, it can be recommended.

The service life of O-rings depends on factors such as system lubrication, pressure, temperature, sealing gap, speed, medium and surface quality of metal parts.

Wide range of materials, all kinds of rubber, plastic and even metal can be used as O-ring seal materials. Therefore, its medium adaptability and temperature adaptability are extremely wide.

Small mounting groove size.

Simple structure and low price.


2. Materials

Now the commonly used materials are NBR (butadiene rubber) and FKM (fluorine rubber). NBR is used for ordinary working conditions, mainly oil-proof and waterproof; FKM is mainly used for working conditions with high temperature (<160°C).

3. Performance parameters



Static sealDynamic seal
Work pressureWithout retaining ring, up to 10MPa; with retaining ring, up to 40MPa; with special retaining ring, up to 200MPa;When there is no retaining ring, the maximum pressure can reach 0.5MPa; when there is a retaining ring, the maximum pressure is 1MPa.
Movement speed-The maximum reciprocating speed can reach 0.3m/s, and the maximum rotation speed can reach 2.0m/s.
TemperatureNitrile rubber NBR: -30℃~110℃; Fluorine rubber FKM: -20℃~160℃



Product Parameters



OR-KIT012 NBR90 612PCS
112.42*1.78202326.59*2.9510
218.77*1.78302424.4*3.18
323.52*1.78302529.4*3.18
42.8*1.9202634.4*3.18
54.8*1.9152739.4*3.110
65.8*1.9152844.4*3.15
76.8*1.9152954.4*3.14
87.8*1.9203021.7*3.510
98.8*1.9203123.7*3.515
109.8*1.9153224.7*3.510
119.8*2.4153325.7*3.510
1210.8*2.4303427.7*3.510
1311.8*2.4153529.7*3.510
1412.3*2.4203631.7*3.510
1513.8*2.4203733.7*3.58
1614.8*2.4203834.7*3.58
1715.8*2.4153937.7*3.58
1817.8*2.4304039.7*3.56
1919.8*2.4124141.7*3.56
2020.8*2.4124218.64*3.5310
2121.8*2.4154324.99*3.5312
2223.47*2.95104432.92*3.5312
Remarks: The total number of O-rings is 612 pieces, the ones marked with colors are fluorine-sprayed O-rings.




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