Material Options: NBR, EPDM, Silicone, FKM, FFKM
Temperature Range: -60°C to +320°C (material dependent)
Hardness: 20–90 Shore A
Standards Available: AS568, ISO 3601, JIS B 2401, customized sizes
Certifications:
Colors:
Packaging: Bulk, individual bags, or OEM branded
Photovoltaic connectors and junction boxes operate in outdoor environments where seals are exposed to temperature cycling, moisture, dust, ozone and long-term weathering. Seal performance also depends on groove dimensions, assembly compression, cable position and the structure of the finished component.
Hao Seal supplies custom EPDM, silicone and FKM O-rings, cover gaskets, cable-entry seals and molded rubber parts for photovoltaic electrical connection systems. Material, hardness and seal geometry are selected according to the actual application, installation structure and required service conditions.
Aflas or Kalrez(FFKM)
Acrylate Rubber(ACM)
Ethylene-propylene(EPR, EPDM)
Fluorocarbon(FKM/FPM)
Fluorosilicone(FVMQ)
Hydrogenated Nitrile(HNBR)
Neoprene Rubber(CR)
Nitrile Rubber(Buna-N/NBR)
Polyurethane(PU)
Silicone Rubber(VMQ)
Styrene-butadiene Rubber(SBR)
Polytetrafluoroethylene(PTFE)
O-Ring
Square Ring
X-Ring
D-Ring
They provide static and dynamic sealing to prevent leakage and ensure long-life equipment reliability.
| O-Ring Size AS568A- | W Cross-Section | L Gland Depth | Squeeze | E(a) Diametral Clearance | G-Groove Width | R Groove Radius | Max Eccen-tricity(b) | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal | Actual | Actual | % | No Back-up Ring(G) | One Back-up Ring(G1) | Two Back-up Ring(G2) | |||||
| 004 through 050 | 1/16 | ±.003 | .050 to .052 | .015 to .023 | 22 to 32 | .002 to .005 | .093 to .098 | .138 to .143 | .205 to .210 | .005 to .015 | .002 |
| 102 through 178 | 3/32 | ±.003 | .081 to .083 | .017 to .025 | 17 to 24 | .002 to .005 | .140 to .145 | .171 to .176 | .238 to .243 | .005 to .015 | .002 |
| 201 through 284 | 1/8 | ±.004 | .111 to .113 | .022 to .032 | 16 to 23 | .003 to .006 | .187 to .192 | .208 to .213 | .275 to .280 | .010 to .025 | .003 |
| 309 through 395 | 3/16 | ±.005 | .170 to .173 | .032 to .045 | 15 to 21 | .003 to .006 | .281 to .286 | .311 to .316 | .410 to .415 | .020 to .035 | .004 |
| 425 through 475 | 1/4 | ±.006 | .226 to .229 | .040 to .055 | 15 to 20 | .004 to .007 | .375 to .380 | .408 to .413 | .538 to .543 | .020 to .035 | .005 |
