Blackburn

Blackburn

Well-Known Member
Looking to buy a replacement seal for the top of my windscreen, have not been happy with the quality of the last one I fitted.
Does anyone have any knowledge of shore values ie hardness / compression strength.
The item I am looking at is ebay
http://tinyurl.com/yarpfnpz
the tech spec
ELASTOMER - NEOPRENE
COLOUR - BLACK
QUALITY - COMMERCIAL
GRADE - C20
HARDNESS - 65° SHORE A +/-5°
S.G. - 1.4G/CM³
TENSILE MPA - 5 MIN
ELONGATION - 300%
TEAR STRENGTH - 20 KG/CM
COMPRESSION SET - 35%
ABRASION RESISTANCE - -
OPERATING TEMPERATURE- -20° / +110° C
 
I can't help with specific data for the original seal but at a compression of 35% you'd need quite a big gap between roof and windscreen (about 7mm) to fit that thickness of the thing you've found on ebay - I know Land Rovers are meant to be a bit rattly but...
 
I recently removed my hard top so change to a full tilt. I fitted a very similar type seal about 5 years ago when I replaced the screen frame etc. I would think that seal would fit ok if it compressed 3-4mm
 
The stuff that is in there now measures nearly 10mm compressed. I think II have an offcut from when I fitted it will find it and measure that.
 
Whatever seal you use it probably needs to be skinned so it does not hold water. I used the correct seal for the bulkhead to screen seal and wasn't happy with it as I was convinced it was open cell. I later ended up carefully masking taping the seal and skinning the edge with marine grade black silicone.
 
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