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Review side-by-side product details, technical notes, and practical differences.

Product comparison

Origin Pro HP3 vs DOWSIL 795 Silicone Building Sealant

A Practical Comparison for Window, Door & Siding Professionals
HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

Origin Pro

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

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DOWSIL™ 795 Silicone Building Sealant

Compared with

DOWSIL™ 795 Silicone Building Sealant

Core Performance & Application Attributes

Sealant Technology

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

Premium Neutral-Cure (Alkoxy) RTV Silicone

DOWSIL™ 795 Silicone Building Sealant

One-Part Neutral-Cure RTV Silicone
Product Class & Movement (ASTM C920)

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

ASTM C920 – Type S, Grade NS, Class 50 (±50% Joint Movement)

DOWSIL™ 795 Silicone Building Sealant

ASTM C920 – Type S, Grade NS, Class 50 (±50% Joint Movement)
Skin Formation / Tack-Free Performance

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

Skin time approximately 20–30 minutes. Water & rain ready in approximately 30 minutes. Full cure approximately 24 hours.

DOWSIL™ 795 Silicone Building Sealant

Working time approximately 20–30 minutes. Tack-free approximately 3 hours. Cure time approximately 7–14 days, with full adhesion in 14–21 days.
Application Temperature Range

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

40°F to 100°F

DOWSIL™ 795 Silicone Building Sealant

All-temperature gunability; the TDS specifies not to install when surface temperatures exceed 122°F. A specific lower application-temperature limit is not stated in the provided TDS.

Comparative Overview

Both HP3 and DOWSIL™ 795 are premium neutral-cure RTV silicone sealants that meet ASTM C920 Class 50 requirements and provide ±50% joint movement capability.

αβγ προσωρινό comparative overview
αβγ προσωρινό comparative overview

Differences You’ll Notice

Both products provide neutral-cure RTV silicone technology, ASTM C920 Class 50 performance and ±50% joint movement capability. HP3 is designed around professional window, door, siding, trim and general residential/commercial sealing, while DOWSIL™ 795 extends into structural glazing and architectural panel applications. HP3 is water & rain ready in approximately 30 minutes, while DOWSIL™ 795 lists approximately 3 hours tack-free and 7–14 days cure time. HP3 is available through flexible contractor and dealer purchasing programs with delivery directly to your shop or jobsite.

Ready to Make the Switch?

Premium neutral-cure RTV silicone. ASTM C920 Class 50 performance. ±50% joint movement capability. 30-minute water & rain ready. Direct online ordering. Delivered to your shop or jobsite.

Beyond the Product Direct Online Ordering · Flexible Ordering Options · Pro Dashboard
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Product Comparison Disclaimer

Product comparison information is based on publicly available technical data published by the respective manufacturers and available at the time of review. Comparisons are provided for general informational purposes only and do not imply product equivalence, specification approval, certification, or suitability for any particular application.

Product names, trademarks, packaging, and images are the property of their respective owners and are used solely for identification and comparative purposes. Legacy Sealants, Inc. and Origin Pro are not affiliated with, sponsored by, or endorsed by any referenced manufacturer.

Product formulations and specifications may change. Users should review current manufacturer technical literature and independently determine product suitability for their specific application.

All third-party trademarks are the property of their respective owners. Their use is solely for identification and comparative purposes and does not imply affiliation, sponsorship, or endorsement.