Aztec Washer Company RD301GG - Universal Master Flash Round Flashing - (1/4 in. - 5 in.)

The Aztec Washer RD301GA Extreme Angle Master Flash is a medium-size flashing designed for steep metal roofs with slopes between 35° and 65°. Made from gray EPDM, it resists UV, ozone, and weathering for long-term performance. The built-in 40° pitch ensures proper alignment on steep roofs, while the flexible trim-to-fit sleeve provides a watertight seal for pipe penetrations up to 5 inches. Its compact base makes it suitable for medium pipe sizes in extreme roof slope conditions.

Key Features:

• Gray EPDM compound with resistance to UV, ozone, and weathering.
• Built-in 40° pitch adapts to roof slopes between 35° and 65°.
• Trim-to-fit sleeve with size markings for precise installation.
• Compact 7-3/4 in base ensures a watertight seal on medium pipe penetrations.

• Part number: RD301GA
• Material: Gray EPDM
• Pipe range: up to 5 in (127 mm)
• Base size: 7-3/4 in (197 mm)
• Application: Medium 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 RD301GA?
A: Urethane or silicone sealant is recommended. Avoid petro-chemical-based sealants.

Q: What roof pitch is RD301GA designed for?
A: It is engineered for steep slopes between 35° and 65°.

Q: What pipe sizes can RD301GA handle?
A: It accommodates pipes up to 5 in (127 mm).

Q: Is RD301GA suitable for high-temperature applications?
A: EPDM is suitable up to 212 °F (100 °C). For hotter applications, silicone versions are recommended.