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Installation Manual - Future Pipe Industries

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5.3. Dimensions of the rubber ring and the locking strip<br />

The commonly used rubber ring is made of NBR (Nitril Butadiene Rubber). Other types of rubber can be supplied<br />

depending on the medium and/or the temperature.<br />

The different types of rubber can be recognized by the following codes:<br />

S - styrene butadiene rubber SBR colour code red spot<br />

N - nitrile butadiene rubber NBR colour code yellow spot<br />

E - ethene propene terpolymer EPDM colour code blue spot<br />

F - fluor elastomer FKM<br />

H - hydrogenated nitrile butadiene rubber H-NBR<br />

Fig. 5.3.a.<br />

The dimensions d and D are shown on the O-ring as well as the year and month of production<br />

Table 5.d. O-rings dimensions<br />

d<br />

ID (mm) d (mm) D (mm)<br />

80 7 80<br />

100 7 109<br />

150 10 156<br />

200 10 207<br />

250 14 260<br />

300 14 311<br />

350 14 360<br />

400 17 409<br />

450 17 460<br />

500 22 508<br />

600 22 610<br />

700 26 690<br />

750 26 740<br />

800 26 790<br />

900 26 880<br />

1000 26 980<br />

1200 30 1120<br />

Wavistrong <strong>Installation</strong> <strong>Manual</strong><br />

21<br />

D

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