Aztec Washer Company RD901GG - Universal Master Flash Round Flashing - (7-3/4 in. - 19 in.)

The Aztec Washer RD901GA Extreme Angle Master Flash is the largest size in the series, designed for oversized pipe penetrations on steep roof slopes between 35° and 65°. Made from gray EPDM, it offers long-lasting resistance to UV, ozone, and weathering. A built-in 40° pitch ensures proper seating on extreme roof angles, while the oversized trim-to-fit sleeve provides a watertight seal for pipes from 7-3/4 in to 19 in. The wide 25-1/4 in base conforms to roof panel profiles, ensuring secure and durable installation.

Key Features:

• Gray EPDM compound with excellent UV, ozone, and weathering resistance.
• Built-in 40° pitch adapts to steep roof slopes (35°–65°).
• Oversized trim-to-fit sleeve seals pipe penetrations from 7-3/4 in to 19 in.
• Large 25-1/4 in base provides secure, watertight coverage.

• Part number: RD901GA
• Material: Gray EPDM
• Pipe range: 7-3/4 in to 19 in (197–483 mm)
• Base size: 25-1/4 in (641 mm)
• Application: Oversized 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 type of sealant should be used with RD901GA?
A: Urethane or silicone sealant is recommended. Avoid petro-chemical-based sealants.

Q: What roof pitch is RD901GA designed for?
A: It is designed for steep slopes between 35° and 65°.

Q: What pipe sizes can RD901GA handle?
A: It accommodates pipes from 7-3/4 in to 19 in (197–483 mm).

Q: Is RD901GA suitable for high-temperature applications?
A: EPDM is suitable up to 212 °F (100 °C). For hotter conditions, silicone versions are recommended.