Aztec Washer Company RD501GG - Universal Master Flash Round Flashing - (3 1/2 in. - 7 3/4 in.)

The Aztec Washer RD501GA Extreme Angle Master Flash is a large flashing designed for steep metal roof applications with slopes from 35° to 65°. Made from gray EPDM, it provides excellent resistance to UV, ozone, and weathering while remaining flexible to accommodate pipe movement. The built-in 40° pitch adapts to extreme slopes, and the trim-to-fit sleeve ensures a watertight seal for pipe penetrations from 3-1/2 in to 7-3/4 in. The wide 10-1/2 in base conforms securely to roof panels for long-term protection.

Key Features:

• Gray EPDM construction with superior weather, UV, and ozone resistance.
• Built-in 40° pitch adapts to steep roof slopes from 35° to 65°.
• Flexible, trim-to-fit sleeve seals pipes from 3-1/2 in to 7-3/4 in.
• 10-1/2 in base molds securely to roof panels for watertight sealing.

• Part number: RD501GA
• Material: Gray EPDM
• Pipe range: 3-1/2 in to 7-3/4 in (89–197 mm)
• Base size: 10-1/2 in (267 mm)
• Application: Large pipe penetrations on steep slope metal roofs
• Temperature guidance: EPDM up to 212 °F (100 °C) continuous, 275 °F (135 °C) intermittent
• Warranty: 20 years (EPDM)

Q: What sealant should be used with RD501GA?
A: Urethane or silicone sealant is recommended. Avoid petro-chemical-based sealants.

Q: What roof pitch is RD501GA designed for?
A: It is designed for steep roof slopes between 35° and 65°.

Q: What pipe sizes can RD501GA handle?
A: It accommodates pipe diameters from 3-1/2 in to 7-3/4 in (89–197 mm).

Q: Is RD501GA suitable for high-temperature applications?
A: EPDM is rated up to 212 °F (100 °C). For hotter applications, silicone versions are recommended.