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USCamera Light Seal Placement Guide | Mamiya Super 23 Film Back

USCamera Light Seal Placement Guide | Mamiya Super 23 Film Back

For help installing light seal kits please go here.  Following the link to that short read can improve the quality of your light seal installation.
USCamera Light Seal Placement Guide | Mamiya Press/Super 23 Film Back
For more information on purchasing this kit, go here

 

USCamera Light Seal Placement Guide | Mamiya Super 23 Film Back

 

You are installing a 6 piece kit for the Mamiya Press/Super 23 film back or roll film holder as Mamiya called them.

This USCamera custom light seal kit includes,

Bottom channel seal, film back body – 1 x 1mm
Top channel seal, film back body – 1 x 1mm
Lower channel seal, film back cover – 1 x 1mm
Upper channel seal, film back cover – 1 x 1mm
Hinge seal, film back body – 1 x 1mm
Latch plate seal, film back cover – 1 x 1mm

USCamera Light Seal Placement Guide | Mamiya Super 23 Film Back

 

Please Contact us with any questions or requests. Currently making light seal kits for many popular film cameras. New light seal kits and parts are added every day.

Top Quality kits using photo grade imported open cell foam

Do you want to make your own light seal kit? Maybe you have a special film camera accessory that requires a special size of the light seal material.  We can help.

Sometimes sheet foam is the best solution. We have foam material in a thickness of 1mm, 1.5mm, 2mm, 3mm, and 4mm available here. In addition, we have many different strips of light seal material already cut to width and 220 mm long here.

USCamera light seal kit placement guides can really help you also. Especially if the old light seals have already been removed before you acquired the camera. go here

See all USCamera Light seal kits available for Mamiya

First of all and the most important and time-consuming-work is removing the old seals. Focus on clean, clean, clean. Clean the old residue from the door channels, mirror cushion area, door hinge area and anywhere else you are replacing the seals. The finest adhesive in the world will not adhere to that sticky, gooey residue that was once a quality light seal. Proper installation will give you thousands of light tight exposures.

See all USCamera light seal kits for Mamiya and more, start here.

USCamera | Genuine Mamiya parts for cameras, lenses |  custom light seals, foam sheets, downloads + more | USCamera Light Seal Placement Guide | Mamiya Super 23 Film Back

Comments (2)

  1. Robert Emmett FLAVIN June 20, 2021 at 3:00 PM Reply

    kudos to you guys for doing such a wonderful job,

    I saw someone from your company mention that some people use yarn in place of seals for these Mamiya roll film backs
    my background is in hydraulics and I’ve been wondering if it wouldn’t be practical to use an O-ring of the correct durometer and that should fit in just beautifully and stay put… no temperature rise or abrasion considerations would make it even better.
    What do you think of that?

    1. Gray June 23, 2021 at 2:45 PM Reply

      A wool type blend was used in some early cameras. It is a glue down material and is not as clean of an install as foam. The camera engineers have used foam since the ‘60s. Unfortunately, the Mamiya backs are designed to compress at most 2mm foam for a light tight seal. I do not how you would keep an 1-2mm “O” ring in place on that back. Also, any resistance when closing the back may spring it or stress the hinge over time.

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