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GRT double-acting rod composite seal
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Rod GRT SILRING 10,00X14,90X2,20 PTBR40 (OR 11,80X1,80 NBR70) Double-acting
Family: GRT double-acting rod composite seal
Dimensions : 10.00 x 14.90 x 2.20
Material: PTFE + BRONZE
Color:
BROWN
Part number: SVZT0100LPTBR40
Weight : 0.2000 gr.
Customs tariff code: 39269097
Country of origin: CN
Rod GRT SILRING 12,00X16,90X2,20 PTBR40 (OR 14,00X1,78 NBR70) Double-acting
Family: GRT double-acting rod composite seal
Dimensions : 12.00 x 16.90 x 2.20
Material: PTFE + BRONZE
Color:
BROWN
Part number: SVZT0120LPTBR40
Weight : 0.2000 gr.
Customs tariff code: 39269097
Country of origin: CN
Rod GRT SILRING 16,00X23,30X3,20 PTBR40 (OR 18,72X2,62 NBR70) Double-acting
Family: GRT double-acting rod composite seal
Dimensions : 16.00 x 23.30 x 3.20
Material: PTFE + BRONZE
Color:
BROWN
Part number: SVZT0160SPTBR40
Weight : 1.2000 gr.
Customs tariff code: 39269097
Country of origin: CN
TECHNICAL DATA
| Seals | Profile | Material | Temperature | Speed | Pressure |
|---|---|---|---|---|---|
| SVZT | | PTFE + 40% BRONCE + O-Ring NBR70 | -20 to +120 ºC | 15 < m/s | 80 < mpa |
QUICK LINKS
SVZT
The SVZT rod seal is a combination of a filled PTFE ring (usually 40% bronze) and an energizing O-ring. It is a technical development of the SRVD profile that can be used in the same housings and applications. The two sides of the seal are angled, enabling it to retain the compact, robust shape of standard rod seals, while retaining the flexibility needed to achieve maximum pressure-dependent compression. The angled edge, created by the special design of the cross-section, allows an additional degree of freedom for the joint.
Maximum compression is therefore always shifted to the area of the rim that is directly subjected to pressure. On the edge on the low-pressure side, the joint has only neutral stress zones, with no compressive load or shear stress, effectively reducing the risk of joint extrusion due to backlash.
The resulting benefits are many: very good static sealing, greater safety in the presence of contaminated fluids thanks to greater clearance from extrusion, the possibility of using larger radial clearances (around 50%) depending on operating conditions.
- Standard material: PTBR40 (PTFE + 40% Bronze) + OR NBR70
- Working temperature: -20 to +100/120 ºC
- Speed: <15m/s
- Pressure: <80mpa
INSTALLATION RECOMMENDATIONS
Piston diametre øD H9 | Depth | Width | Radius | Radial gap S máx.* | C/S OR | ||||
Standard serie | Light-duty serie | Heavy-duty serie | ød h9 | L +0,20 | r | 10 Mpa | 20 Mpa | 40 Mpa | d2 |
3 - 7,90 | 8 - 18,90 |
| D + 4,90 | 2,20 | 0,40 | 0,40 | 0,30 | 0,20 | 1,78 |
8 - 18,90 | 19 - 37,90 |
| D + 7,30 | 3,20 | 0,60 | 0,60 | 0,50 | 0,30 | 2,62 |
19 - 37,90 | 38 - 199,90 | 8 - 18,90 | D + 10,70 | 4,20 | 1,00 | 0,70 | 0,50 | 0,30 | 3,53 |
38 - 199,90 | 200 - 255,90 | 19 - 37,90 | D + 15,10 | 6,30 | 1,30 | 0,80 | 0,60 | 0,40 | 5,33 |
200 - 255,90 | 256 - 649,90 | 38 - 199,90 | D + 20,50 | 8,10 | 1,80 | 0,80 | 0,60 | 0,40 | 6,99 |
256 - 649,90 | 650 - 999,90 | 200 - 255,90 | D + 24,00 | 8,10 | 1,80 | 0,90 | 0,70 | 0,50 | 6,99 |
650 - 999,90 |
| 256 - 649,90 | D + 27,30 | 9,50 | 2,50 | 1,00 | 0,80 | 0,60 | 8,40 |
*At pressures > 40Mp, it is recommended to use the diametral tolerance h8/f8 on the back of the seal.