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01-25-2022, 11:33 AM
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#1
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Member
Join Date: Jun 2018
Posts: 90
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Rubber seal conditioner suggestions
Just paid for new rubber seals to be installed on my 2017 Sierra HT 3350BH. Of course I want them to get as much life as possible. Do any of you guys suggest a rubber conditioner over another?
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01-25-2022, 11:46 AM
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#2
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Pickin', Campin', Mason
Join Date: Aug 2015
Location: South Western PA
Posts: 19,146
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303 Protectant. My go-to choice for many, many years with many R/Vs.
Some rubber seal manufacturers also recommend baby powder but I didn't care for the results.
__________________
2022 Cedar Creek 345IK 5th Wheel•Solar & Inverter•2024 Ford F-Series SCREW•7.3L•4x4•Factory Puck•B&W Companion•TST Tire Monitor w/Repeater•Sinemate 3500w Gen.
F&AM Lodge 358 Somerset, PA - JAFFA Shrine - Altoona, PA
Days Camped ☼ '19=118 ☼ '20=116 ☼ '21=123 ☼ '22=134 ☼ '23=118☼ '24=90
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01-25-2022, 12:26 PM
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#3
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Senior Member
Join Date: Oct 2018
Location: San Jose, CA
Posts: 998
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Premium RV Slide Out Rubber Seal Conditioner and Protectant - Thetford 32778
__________________
2019 FR3 33DS Motorhome
650 Watts Solar, 400Ah LIFEPO4, 2000 Watt Inverter, 40A DC/DC Charger, SumoSprings, Roadmaster Steering Stabilizer, BlueOx Trac Bar, Truma AquaGo WH, NVIDIA Shield TV
Days Camping
2019 57:2020 20:2021 30:2022 46:2023 47:2024 7
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01-25-2022, 12:48 PM
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#4
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Senior Member
Join Date: Oct 2016
Location: SW PA
Posts: 910
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Another vote for 303 protectant. Great stuff for anything rubber including tires.
__________________
2021 Newmar Baystar 3401
2019 Jeep Cherokee Trailhawk toad
2017.5 Forester 3051S Traded 7/2020
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01-26-2022, 04:07 AM
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#5
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Senior Member
Join Date: Nov 2021
Location: SW Florida
Posts: 373
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hello. I have a new 5'er 2 slides. was thinking of this other day. I looked online at the 303. 5 Stars. But they say you have to apply abt every 3 weeks or so. How often do you apply it?
I live in Florida so most yr it gets really hot. an rubber / heat don't really mix well.
__________________
Abe Arctic Wolf 2021 29IRl
2017 Titan XD 5.0 Diesel 2018 Indian Roadmaster
Disabled Vet, IT Guy SW Fla.
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01-26-2022, 07:38 AM
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#6
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Georgia Rally Coordinator
Join Date: Jun 2015
Location: GA
Posts: 24,484
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Quote:
Originally Posted by Steve-W
Another vote for 303 protectant. Great stuff for anything rubber including tires.
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X 3 have use3d it for years. Later RJD
__________________
2020 Shasta Phoenix SPF 27RKSS (sold)
2018 Dodge Ram 2500 6.4 3:73 gearing.(sold) (sold) 2015 Chevy 2500 6.0, 4:10
Traded 2015 30WRLIKS V-Lite
Days camped 2019 62
Days camped 2020 49 days camped 2021-74 2022-40 days 2023 5 days
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01-26-2022, 07:46 AM
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#7
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Senior Member
Join Date: Jun 2012
Location: Southern NM
Posts: 9,562
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Only one of us in our fairly large camping group has ever used any type of slide seal conditioner. He replaced all his seals after about 4 years, long before the rest of us. Was he just unlucky or was it the conditioner he used? 
I replaced my outer seals at 7 years and will replace some of my inner slide seals later this year that are 11 years old. And that is in the harsh SW sun.
Draw your own conclusions......
__________________
Scott and Liz - Southern NM
2012 Wildcat Sterling 32RL - w/level up (best option ever)
2007 Chevy 2500HD Duramax
Reese Fifth Airborne Sidewinder
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01-26-2022, 10:10 AM
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#8
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Junior Member
Join Date: Nov 2020
Posts: 3
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I've been using 3-in-one RV Rubber conditioner for a couple of years and it seems to be keeping them soft and pliable. Is it extending their life or am I wasting my time and money I really don't know but my opinion is it's working well.
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01-26-2022, 10:19 AM
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#9
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Pickin', Campin', Mason
Join Date: Aug 2015
Location: South Western PA
Posts: 19,146
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Quote:
Originally Posted by wildmanabe
hello. I have a new 5'er 2 slides. was thinking of this other day. I looked online at the 303. 5 Stars. But they say you have to apply abt every 3 weeks or so. How often do you apply it?
I live in Florida so most yr it gets really hot. an rubber / heat don't really mix well.
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Twice a year.
Not sure where the every 3 weeks comes from?
__________________
2022 Cedar Creek 345IK 5th Wheel•Solar & Inverter•2024 Ford F-Series SCREW•7.3L•4x4•Factory Puck•B&W Companion•TST Tire Monitor w/Repeater•Sinemate 3500w Gen.
F&AM Lodge 358 Somerset, PA - JAFFA Shrine - Altoona, PA
Days Camped ☼ '19=118 ☼ '20=116 ☼ '21=123 ☼ '22=134 ☼ '23=118☼ '24=90
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01-26-2022, 10:26 AM
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#10
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Senior Member
Join Date: Jun 2017
Location: Escondido, CA
Posts: 820
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303 twice a year. Buy the gallon size on amazon and fill a smaller spray bottle.
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2016 Dynamax Isata 3 24FW
2016 Jeep Willys JK
Yellow Lab Buddy Biscuit Eater
USN-RET/DOD-RET
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01-26-2022, 11:03 AM
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#11
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Senior Member
Join Date: Aug 2017
Posts: 852
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3-M rubber conditioner or 100% silicone gel. Everything else breaks down and either forms acid or becomes a gooey adhesive.
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01-26-2022, 11:16 AM
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#12
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Senior Member
Join Date: Sep 2016
Location: ALASKA (World's Biggest Campground)
Posts: 6,746
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I've use 303 Aerospace Protectant (30308), over the years, with good success. Follow the instructions on the bottle. If you apply it like Armor All you will be disappointed.
__________________
'07 K3500 Silverado LT Crew Duramax (LBZ)
2016 Salem 27RKSS
1984 CHEV SCOTTSDALE K20 2GCGK24J0E1XXXXXX (Chevrolet Legends-Class of 2019)
"...exhaust fluid? We don't need no stinkin' exhaust fluid"
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02-11-2022, 04:51 PM
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#13
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rfifer
Join Date: Aug 2017
Location: Miami
Posts: 172
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I have used 3 in One conditioner on my seals and believe that it has helped to keep them more pliable. Been using the brand for two years now.
__________________
Bob and Jan
Miami
Grey Wolf 26 DBH
TV F-150
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02-20-2022, 07:05 PM
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#14
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Junior Member
Join Date: Feb 2022
Location: Arkansas
Posts: 1
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I have a 2013 Coachmen Freedom Express 192 rbs...need to replace slide out seals....how do I know that I am orderinig the right seals?
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02-20-2022, 07:16 PM
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#15
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Site Team
Join Date: Aug 2012
Location: top side land of Lincoln
Posts: 7,509
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Quote:
Originally Posted by 5picker
303 Protectant. My go-to choice for many, many years with many R/Vs.
Some rubber seal manufacturers also recommend baby powder but I didn't care for the results.
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X4
__________________
2014 LaCrosse 323RST-TE-C
2009 Chevy 2500HD Z71
Seasonal
Zelda the campin dog
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02-20-2022, 09:09 PM
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#16
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Senior Member
Join Date: Jul 2017
Location: North of Seattle, WA
Posts: 17,354
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Quote:
Originally Posted by 5picker
303 Protectant. My go-to choice for many, many years with many R/Vs.
Some rubber seal manufacturers also recommend baby powder but I didn't care for the results.
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Baby Powder used to be Talc based and Talc has been used in the tire industry to keep things like tubes from sticking to insides of tires.
Today Baby Powder is talc free and often uses cornstarch or similar substance.
Itoo am a 303 fan.
__________________
"A wise man can change his mind. A fool never will." (Japanese Proverb)
"You only grow old when you run out of new things to do"
2018 Flagstaff Micro Lite 25BDS
2023 f-150 SCREW XLT 3.5 Ecoboost (The result of a $68,000 oil change  )
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