DMS SEALS TECHNOLOGY CO.,LIMITED
The Professional Sealing Solution Supplier(O Ring Suppliers & Oil Seal Manufacturers).
DMS Seals - Hydraulic Seals and Oil Ring Seals Manufacturer & Supplier
FOR HITACHI MODELS OR-KIT012 NBR90 612PCS
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 seal | Dynamic seal | |
| Work pressure | Without 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. |
| Temperature | Nitrile rubber NBR: -30℃～110℃; Fluorine rubber FKM: -20℃～160℃ | |
| OR-KIT012 NBR90 612PCS | |||||
| 1 | 12.42*1.78 | 20 | 23 | 26.59*2.95 | 10 |
| 2 | 18.77*1.78 | 30 | 24 | 24.4*3.1 | 8 |
| 3 | 23.52*1.78 | 30 | 25 | 29.4*3.1 | 8 |
| 4 | 2.8*1.9 | 20 | 26 | 34.4*3.1 | 8 |
| 5 | 4.8*1.9 | 15 | 27 | 39.4*3.1 | 10 |
| 6 | 5.8*1.9 | 15 | 28 | 44.4*3.1 | 5 |
| 7 | 6.8*1.9 | 15 | 29 | 54.4*3.1 | 4 |
| 8 | 7.8*1.9 | 20 | 30 | 21.7*3.5 | 10 |
| 9 | 8.8*1.9 | 20 | 31 | 23.7*3.5 | 15 |
| 10 | 9.8*1.9 | 15 | 32 | 24.7*3.5 | 10 |
| 11 | 9.8*2.4 | 15 | 33 | 25.7*3.5 | 10 |
| 12 | 10.8*2.4 | 30 | 34 | 27.7*3.5 | 10 |
| 13 | 11.8*2.4 | 15 | 35 | 29.7*3.5 | 10 |
| 14 | 12.3*2.4 | 20 | 36 | 31.7*3.5 | 10 |
| 15 | 13.8*2.4 | 20 | 37 | 33.7*3.5 | 8 |
| 16 | 14.8*2.4 | 20 | 38 | 34.7*3.5 | 8 |
| 17 | 15.8*2.4 | 15 | 39 | 37.7*3.5 | 8 |
| 18 | 17.8*2.4 | 30 | 40 | 39.7*3.5 | 6 |
| 19 | 19.8*2.4 | 12 | 41 | 41.7*3.5 | 6 |
| 20 | 20.8*2.4 | 12 | 42 | 18.64*3.53 | 10 |
| 21 | 21.8*2.4 | 15 | 43 | 24.99*3.53 | 12 |
| 22 | 23.47*2.95 | 10 | 44 | 32.92*3.53 | 12 |
| Remarks: The total number of O-rings is 612 pieces, the ones marked with colors are fluorine-sprayed O-rings. | |||||
Professional O Ring Suppliers & O Ring Manufacturers
CONTACT US
TEL: +86-757-86235767
Contact Person: Frank Zhou
E-mail:
sales@dmsseals.com
dms@dmsseals.com
Skype: 13318313660
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