G-Dive Drysuit Bellows Neck Seals

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Bellows Neck Seal

G-Dive Drysuit Bellows Neck Seals

Drysuit Bellows Neck Seals
Drysuit Bellows Neck Seals G Dive Neck Seals Sizing

The standard design neck seal found on most drysuits offers a {10in | 252mm} mounting diameter at the base, three different latex thickness options, and a variety of choices for neck sizing - see sizing chart below. As a general rule, the seal opening should be trimmed to be no smaller than 80% (i.e. maximum of 20% less) than your actual measurement of the relaxed neck circumference, tighter than that could cut off blood flow to your brain.

Latex Thickness Options:
  • Flexible (FD): 0.5mm to 0.7mm - More flexible with more stretch than the standard
  • Standard (GD): 0.7mm to 1.0mm - Usual thickness found on most seals
  • Heavy Duty (HD): 1.0mm to 1.4mm - Thicker, thus more durable, but less comfortable

Neck Seal Size Chart

Standard Bellow Neck Seal - 10" Mounting diameter (standard)
Item # Size Quality Neck Circumference /Diameter Fits** Thickness
FD-N1-S Small Flexible 9.15" / 2.91" 10"-13" 0.5-0.7mm
FD-N1-M Medium Flexible 10.5" / 3.34" 12"-15" 0.5-0.7mm
FD-N1-L Large Flexible 11.9" / 3.79" 14"-17" 0.5-0.7mm
FD-N1-XL* X-Large Flexible 13.5" / 4.30" 16"-20" 0.5-0.7mm
GD-N1-S Small Standard 9.15" / 2.91" 10"-12.5" 0.7-1.0mm
GD-N1-M Medium Standard 10.5" / 3.34" 12"-14.5" 0.7-1.0mm
GD-N1-L Large Standard 11.9" / 3.79" 14"-16.5" 0.7-1.0mm
GD-N1-XL X-Large Standard 13.5" 16"-19" 0.7-1.0mm
HD-N1-S Small Heavy Duty 9.15" / 2.91" 9.5"-11.5" 1.0-1.4mm
HD-N1-M Medium Heavy Duty 10.5" / 3.34" 11"-13" 1.0-1.4mm
HD-N1-L Large Heavy Duty 11.9" / 3.79" 12.5"-14.5" 1.0-1.4mm
HD-N1-XL X-Large Heavy Duty 13.5" / 4.30" 14.5"-17" 1.0-1.4mm

* Item is special order, contact Dive Gear Express for availability.
** Fit is only a guideline, as personal preference for comfort varies widely among divers.

More Information
Brand G-Dive
Weight 0.250000

Customer Reviews

4 out of 5 stars
10 Reviews
80% of customers
recommend this product
5 stars 6 (60%)
4 stars 2 (20%)
3 stars 0 (0%)
2 stars 0 (0%)
1 star 2 (20%)
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Verified Buyer
My recommendation is to choose ...
Nov 28, 2020
My recommendation is to choose the one size smaller than what fits you on the chart. I bought 2 to get the size right.
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Verified Buyer
Size chart is wrong
Sep 26, 2019
Very disappointed with this item - I was at the upper end of the medium size on their size chart and it is too loose. I tried it on, and it felt like an OK fit, and that I probably would not have to trim it. AFTER installing it on my drysuit, a process which was very time-consuming and required the help of 2 friends, I found that the seal is indeed too large and it leaks all around. Very annoying to have measured myself, compared to the size chart, and then find that the chart is wrong.
Was this review helpful? 1
Verified Buyer
Neck gasket.
Oct 3, 2018
Excellent product and delivery.
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Verified Buyer
The best company I work with
Sep 27, 2018
I build and repair dry suits in the Seattle area, and-These guys are by far the best company. They are helpful , reliable, supportive, and efficient. They have a great selection and just a great business to work with!!!
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Verified Buyer
Ran a little large
Jul 26, 2018
Overall great seals. Very durable (I got a standard thickness). Only caveat is that the seal ran a little large for me. I had ordered a large and was right in the middle of the size range, but when it arrived, it was far too loose on my neck. I bought a medium and that is working great.
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Verified Buyer
heavy duty neck gasket
Apr 18, 2018
Double thickness latex feels durable and the price was excellent. Installation went fine.
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Verified Buyer
Good product. Excellent service
Mar 13, 2018
I find DGE to have excellent service. The seals they sell are good and the price is right. The manufacturer needs to re calibrate the sizing charts. I measure my wrists and neck before I re order and find the seal sizes they recommend to be a bit big for me. Fortunately DGE has been good about exchanges. DGX Reply: We have consulted with G-Dive and updated the sizing charts. Thank you for your input!
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Verified Buyer
Great Neck Gasket for my Kayak Dry Top
Jan 21, 2018
The neck gasket for my kayak dry top appears to be of excellent quality. I had no trouble glueing it on and it fit the older dry top very well. It's a great value for the money.
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Verified Buyer
May 22, 2017
Great product,not flimsy seals from the past
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Verified Buyer
great speedy delivery Thank you
Mar 25, 2017
great speedy delivery Thank you !!!!
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