Self healing injection ports - 10pcs

These Self-Healing Injection Ports are small rubber plugs made from butyl rubber — the same material used in lab-grade vial stoppers. Push one into a 7.1 mm hole in your substrate jar lid and you have a permanent, sterile injection point. The rubber accepts a spore-syringe or LC needle, then re-seals automatically as you pull the needle back out.

How it fits in your jar-lid setup

Every properly prepared substrate jar lid has two 7.1 mm holes — one for an injection port (this product), one for a filter for fresh-air exchange:

• Inoculation port (this product) — for sterile syringe injection of spore solution or liquid culture.
• Self-adhesive lid filter — for the jar to breathe (FAE) without letting contaminants in.

Specifications

• Material: butyl rubber — heat-stable, autoclavable, repeatedly self-sealing
• Hole size needed: 7.1 mm (use our drill bit below)
• Port dimensions: 12.5 mm outer diameter, 7.2 mm insert diameter
• Quantity: 10 pieces
• Use case: grain spawn jars, liquid culture jars, supplemented substrate jars, BRF jars, grow bags

How to use

1. Drill a clean 7.1 mm hole in your jar lid (use our drill bit below).
2. Deburr the hole edge so the rubber seats cleanly.
3. Push the port into the hole until its flange sits flush against the lid.
4. Sterilise the jar (lid included) in a pressure cooker at 121 °C / 15 psi.
5. After cooling, inject your spore syringe or liquid culture through the rubber — re-sealing is automatic.

The complete jar-lid kit

Drill Bit for Substrate Jar Lids

Self-Adhesive Lid Filters 18 mm — 50 Pieces