The Complete Drysuit Maintenance Guide: Care Tips That Add Years

Why Maintenance Matters

A well-maintained drysuit can last 10-15 years. A neglected one might fail in 3-5. The difference is not complicated or time-consuming. It is a consistent routine of simple tasks that prevent the most common causes of failure: salt corrosion, UV degradation, seal deterioration, and zipper malfunction.

This guide covers everything you need to do, how often to do it, and the mistakes that cost divers the most money.

The Post-Dive Rinse Routine

This is the single most important maintenance habit. Salt, sand, chlorine, and organic matter left on your suit accelerate wear on every component.

Immediately after every dive:

1. Rinse the exterior thoroughly with fresh water. Pay attention to the zipper teeth, valve bodies, and any areas where sand or silt collects (boot soles, knee pads, pockets).
2. Open the zipper fully and rinse the inside of the zipper track. Salt crystals inside the waterproof zipper are one of the top causes of zipper failure.
3. Rinse the seals with fresh water. Wipe them gently to remove salt residue.
4. Flush the valves by pressing the inflator button under running water and rotating the exhaust valve through its full range while water runs over it.
5. Turn the suit inside out if possible and rinse the interior, especially if you were sweating heavily.
6. Hang to dry in shade, away from direct sunlight. Dry both sides. Do not fold or store the suit while it is still damp.

If fresh water is not immediately available, at minimum rinse the zipper and seals. Everything else can wait a few hours, but the zipper cannot.

Zipper Care and Waxing

The waterproof zipper is the most expensive single component on your suit. Replacing one costs hundreds and requires professional work. Maintaining it costs almost nothing.

After every rinse:

• Run your fingers along both sides of the zipper teeth to check for grit or debris
• Apply zipper wax (beeswax or manufacturer-recommended wax) to both sides of the teeth
• Open and close the zipper a few times to distribute the wax evenly

Every 10-15 dives:

• Clean the zipper more thoroughly with a soft toothbrush and fresh water
• Apply a heavier coat of wax
• Check the fabric tape on both sides of the zipper for fraying or separation

What to avoid:

• Never force a zipper that sticks. Stop, clean it, wax it, and try again
• Never fold the suit across the zipper for storage
• Never use silicone spray or WD-40 on a waterproof zipper. Use only the recommended wax
• Never let sand or grit sit in the zipper track

A bronze zipper upgrade is more resistant to salt corrosion than standard polymer zippers, but it still needs waxing and cleaning. No zipper is maintenance-free.

Seal Inspection and Maintenance

Seals fail more often than any other drysuit component. Regular inspection catches problems before they become leaks on a dive.

Latex Seals

Latex is the traditional seal material. It seals effectively and is inexpensive to replace, but it degrades over time from UV exposure, ozone, body oils, and general aging.

Maintenance routine:

• After rinsing, dust latex seals lightly with unscented talcum powder or pure cornstarch. This prevents the latex from sticking to itself and slows surface degradation.
• Store the suit with seal protectors or stuff the wrist and neck openings with soft material (a rolled towel works) to prevent the latex from folding and creasing.
• Inspect seals before every dive by gently stretching them and looking for thin spots, discolouration, tears, or sticky patches.

Expected lifespan: 1-2 years with regular use. Longer if stored properly and protected from UV and ozone.

Neoprene Seals

Neoprene seals are smooth-skin (unlined) neoprene. They are more comfortable and durable than latex, with better cold-water performance.

Maintenance routine:

• Rinse with fresh water after every dive
• Do not use talcum powder on neoprene seals. It is unnecessary and can degrade the smooth-skin surface
• Inspect for nicks, cuts, and delamination where the smooth skin separates from the foam
• Keep away from sharp fingernails and jewellery when donning the suit

Expected lifespan: 2-4 years with regular use.

Silicone Seals

Silicone is the premium seal material. It is hypoallergenic, extremely durable, resistant to UV and ozone, and feels softer against the skin than latex.

Maintenance routine:

• Rinse with fresh water. That is essentially it
• Silicone does not need talcum powder and does not degrade from UV the way latex does
• Inspect occasionally for cuts or tears, though these are rare
• Silicone can attract lint and dust. A quick rinse or wipe removes it

Expected lifespan: 5-8 years with regular use. Some silicone seals last even longer.

Seal Comparison at a Glance

Factor	Latex	Neoprene	Silicone
Lifespan	1-2 years	2-4 years	5-8 years
Comfort	Adequate	Good	Excellent
Allergies	Common trigger	Rare	Hypoallergenic
Cold water performance	Basic	Good	Good
Maintenance effort	High (powder, storage care)	Low	Very low
Replacement cost	Low	Moderate	Higher
UV/ozone resistance	Poor	Good	Excellent

Valve Servicing

Valves are mechanical components with moving parts, o-rings, and springs. They need periodic attention.

After every dive:

• Flush with fresh water during your rinse routine
• Press the inflator button a few times under running water to clear salt from the mechanism
• Rotate the exhaust valve through its range to clear debris

Every 50-100 dives or annually (whichever comes first):

• Have valves professionally serviced. This involves disassembly, cleaning, o-ring inspection, and lubrication
• Check that the inflator button responds crisply and does not stick
• Check that the exhaust valve dumps and holds as expected across its adjustment range

Signs a valve needs servicing now:

• Inflator button feels gritty or sticks
• Exhaust valve leaks or does not dump when it should
• Slow or inconsistent inflation
• Visible corrosion around the valve body

Maintenance Frequency Table

Task	Frequency
Full fresh water rinse	After every dive
Zipper wax application	After every rinse
Seal inspection (stretch and check)	Before every dive
Latex seal talcum powder	After every rinse
Thorough zipper cleaning with brush	Every 10-15 dives
Valve flush under running water	After every dive
Professional valve service	Annually or every 50-100 dives
Full suit inspection (seams, fabric, all components)	Every 6 months
Zipper replacement (preventive)	Every 5-8 years depending on use
Latex seal replacement	Every 1-2 years
Neoprene seal replacement	Every 2-4 years
Silicone seal replacement	Every 5-8 years

Storage

How you store your suit between dives has a significant impact on longevity.

Do:

• Store on a wide-shouldered hanger in a cool, dry, dark place
• Leave the zipper slightly open (not fully closed) to reduce stress on the teeth
• Stuff the neck and wrist openings to prevent latex seals from creasing
• Make sure the suit is completely dry before storing

Do not:

• Store in direct sunlight or near heat sources
• Fold the suit (especially across the zipper)
• Store in a sealed bag while damp
• Leave the suit compressed in a dive bag for extended periods
• Store near electric motors, which produce ozone that degrades latex

Common Mistakes That Shorten Suit Life

1. Skipping the rinse. “I will do it later” turns into salt-encrusted zippers and corroded valves.
2. Drying in direct sunlight. UV destroys latex seals and accelerates fabric degradation. Always dry in shade.
3. Forcing the zipper. If it resists, clean and wax it. Forcing it damages the teeth and can crack the waterproof membrane.
4. Storing damp. Mildew, bacteria, and accelerated material breakdown. Always dry both sides completely.
5. Ignoring small leaks. A pinhole in a seal or a slow weep from a valve only gets worse. Fix it now.
6. Using the wrong products. Silicone spray on zippers, petroleum-based products on latex, household cleaners on fabric. Use only products recommended for drysuit components.
7. Skipping professional valve service. Valves have internal o-rings and springs you cannot see. Annual servicing catches problems before they cause a flooded suit.

Frequently Asked Questions

How often should I wax my drysuit zipper?

After every rinse, which should be after every dive. It takes 30 seconds and is the simplest way to protect the most expensive component on your suit. Use beeswax or the wax recommended by your zipper manufacturer.

Can I machine wash my drysuit?

No. Machine washing can damage seals, zipper, valves, and fabric coatings. Hand rinse with fresh water only. If the interior smells, you can soak it in a diluted wetsuit shampoo solution, then rinse thoroughly and dry completely.

My latex seals are getting sticky. What does that mean?

Sticky latex is degrading latex. It is a sign that the rubber is breaking down, usually from UV exposure, ozone, or age. Replace the seals soon. Sticky seals are near the end of their life and are likely to tear during your next dive.

How do I know when my zipper needs replacing?

If the zipper leaks despite being clean, waxed, and properly closed, the waterproof membrane may be compromised. Other signs include teeth that no longer interlock smoothly, visible cracks in the polymer coating, or persistent stiffness that waxing does not resolve. A professional service centre can test and assess zipper integrity.

Is it worth upgrading from latex to silicone seals?

For most regular divers, yes. Silicone seals cost more upfront but last 3-5 times longer than latex, require almost no maintenance, and are far more comfortable. If you dive frequently, the total cost of ownership is often lower with silicone because you replace them far less often. They are also the only option for divers with latex allergies.