What is the difference between the 501 and 551 versions of this sealant?

Both are non-sag, but 501 is for horizontal surfaces and 551 is for vertical surfaces. Not sure what the difference is. The last letter indicates the color. (W=white)

can this caulk tube of dico r be reseal ed after opening, to be used at a later date or will it just dry out.?

There is a product out there called Little Red Cap (https://www.amazon.com/Little-Red-Cap-Canister/dp/B076CRG6WN/ref=sr_1_3?crid=26RMJPU78XU9Y&keywords=little+red+cap+caulking+tube+covers&qid=1568080303&s=automotive&sprefix=little+red+cap+c%2Cautomotive%2C178&sr=1-3-catcorr). I have had tubes covered for many months and they don't dry out. I have found this at local hardware stores as well.

can i use this to seal corner trim on rv or will it sag to much

Non sagging like the label says.

Do you have it in black?

Yes, we do. The part number is 551LSB-1

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Description

🛡️ Seal Smart, Stay Leak-Free — The Ultimate Roof Armor

UV PROOF DURABILITY - Sun-ray stabilized formula prevents discoloration and degradation over time.
CLEAN STYLISH FINISH - Bright white color enhances your RV roof’s sleek, professional look.
WATERTIGHT CONFIDENCE - Seals roof edges, vents, and screws flawlessly to keep leaks out.
FLEXIBLE LONG LASTING - Non-sag, flexible sealant that moves with your roof without cracking or peeling.
VERSATILE COMPATIBILITY - Engineered for EPDM but bonds perfectly with PVC, TPO, metal, wood, and more.

Dicor 551LSW1 White Non-Sag Roof Lap Sealant is a premium, waterproof rubber-based sealant designed for EPDM and multiple roofing materials. Its sun-ray stabilized formula ensures long-lasting UV resistance without staining, while providing superior adhesion to surfaces like aluminum, wood, vinyl, and concrete. Packaged in a convenient 10.3 oz tube, it delivers a flexible, durable, and clean white finish that protects roof edges, vents, and fasteners from leaks and weather damage.

Specifications

Material	Rubber
Brand	Dicor
Style	Non-Leveling
Item Weight	0.6 Pounds
Item dimensions L x W x H	28.6 x 5.1 x 5.1 Centimeters
Water Resistance Level	Waterproof
Item Form	Liquid
UPC	677917000661
Net Quantity	10.3 millilitre
Global Trade Identification Number	00677917000661
Number of Items	1
Colour	White
Surface Recommendation	Roof, Vent
Manufacturer	Dicor
Country of Origin	USA
Model number	551LSW1
Special Feature	Stain resistant
Item Weight	272 g
Product Dimensions	28.58 x 5.08 x 5.08 cm; 272.16 g
Item model number	551LSW1
Item Height	2 Inches
Item Width	2 Inches
Included Components	Dicor Corporation 551Lsw-12 Edpm Lap Seal 10.3 Oz. Tube Wht
Are batteries included?	No

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