Self-Healing Injection Ports – 50 Pack – Midwest Grow Kits

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Reusable Self Healing Injection Ports (50 Pack)

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50-pack of reusable self-healing injection ports — high-temp silicone/EPDM with 3M autoclave-safe adhesive. Peel-and-stick onto jar lids or spawn bags.

🔥 226 purchased in the last 30 days
⭐ 3,000+ units sold

Description

A jar you can't reach without opening it isn't sterile for long. The Microppose Reusable Self-Healing Injection Port solves that: stick it onto a jar lid or spawn bag, and it becomes a permanent injection point that seals itself shut after every needle puncture — so you can inoculate again and again without ever breaking the jar's seal. This 50-pack is built from autoclavable silicone/EPDM with a 3M high-temp adhesive backing that survives repeated sterilization cycles.

  • MaterialSilicone/EPDM
  • Adhesive3M High-Temp
  • ReusableYes
  • ApplicationPeel & Stick
  • Pack Size50
  • Autoclavable
  • Self-Healing
  • Peel & Stick
  • Lab-Grade
  • Reusable

Why Growers Choose These Ports

A self-healing injection port is a small silicone membrane, not a hole you cut — you stick it directly onto a lid or bag, and a needle punctures straight through it and reseals instantly, no separate filter or hole needed. The high-temp silicone/EPDM blend and 3M adhesive hold through repeated autoclave cycles, so one port keeps working injection after injection instead of getting replaced every batch.

What's in the Pack

  • 50x reusable self-healing injection ports, peel-and-stick backing

Injection Port Specifications

Spec Detail
Material High-temp silicone/EPDM foam rubber blend
Adhesive 3M professional-grade, autoclave-safe backing
Sterilization Autoclavable — withstands repeated pressure sterilization
Application Peel and stick directly to a lid or bag, no tools needed
Compatible Surfaces Metal or plastic jar lids, spawn bags
Reuse Self-healing membrane reseals after each puncture
Pack Size 50 ports
Best For Grain jars, liquid culture builds, spawn bags, custom lids

How to Use Your Injection Ports

  1. Peel a port from its backing and press it firmly onto a clean, dry spot on your lid or bag.
  2. Sterilize as normal — the port and adhesive are rated to survive autoclaving.
  3. Push a needle straight through the port to inject spores, liquid culture, or agar wedges.
  4. Withdraw the needle — the membrane reseals itself, ready for the next injection.

Frequently Asked Questions

Do I need to drill a hole before applying the port?

No. Unlike a gas-exchange filter, this port is solid silicone — you stick it directly onto your lid or bag, and the needle punctures straight through the material itself. No hole needed.

How many times can I reuse one port?

The self-healing membrane is designed for repeated punctures over the life of the jar or bag it's applied to — that's the point of a reusable port versus a single-use seal. Eventually heavy, repeated use in the same spot will wear any silicone membrane, so most growers get many uses per port before it needs replacing.

Can these go through the autoclave?

Yes. Both the silicone/EPDM port and the 3M adhesive backing are built to withstand repeated pressure sterilization without failing or lifting off.

Where do these go — jar lids or spawn bags?

Both. They stick to metal or plastic jar lids just as well as they stick to spawn bags, so you can build your own custom injection point on whatever container you're using.

Should I get the 25-pack or the 50-pack?

Same port, just more of them. The 25-pack suits smaller projects or topping off an existing setup; this 50-pack is the better value if you're building out jars or bags in volume.