COMPONENTS & ACCESSORIES
Closures, Vents, and Chemical Coding Elements
The Accessory Components that Complete the Kurko System: transport and vented closures shared across IBCs and drums, and the rivets and blocker plugs that assign a KOLINK™ code
CLOSURES
The listed closures cover every 2-inch and 6-inch port across Kurko’s High-Purity (HP) and Ultra-Pure (UP) containers — shipping caps in three configurations, sealed and vented bung plugs, and the IBC fill-port cap. All 2-inch hardware shares the S62×5 thread across IBCs and drums, so one closure inventory serves every container in the plant.
2” Standard Shipping Cap
Sealed transport closure for IBC service ports and drum ports fitted with the KoLink™ Diptube insert. Tamper-evident from fill to point of use.
| TYPE | S62×5 modified 2-inch buttress, female cap |
| MATERIAL | HDPE drive shell; fluoropolymer or UHP HDPE sealing element |
| SEAL | Captive sealing element; No O-ring, no elastomers |
| VENT | None — 100% sealed in transit |
| SERVICE | Stable, non-outgassing chemistries |
| INSTALL | Hand-tighten only — do not over-tighten; remove slowly |
| FITTING | 2-inch connections across Kurko IBCs and drums |
2” Manual Relief Shipping Cap
Manual relief closure for IBC service ports and drum ports fitted with the KoLink™ Diptube insert. Sealed through transit; the consignee vents headspace before opening
| TYPE | S62×5 modified 2-inch buttress, female cap |
| MATERIAL | HDPE drive shell; fluoropolymer or UHP HDPE sealing element |
| SEAL | Captive sealing element; No O-ring, no elastomers |
| VENT | Captive bleed vent with integral hose barb — sealed until opened |
| SERVICE | Volatile and outgassing chemistries |
| INSTALL | Hand-tighten only — vent headspace before removing |
| FITTING | 2-inch connections across Kurko’s IBCs and drums |
2” Continuous Relief Shipping Cap
Manual relief closure for IBC service ports and drum ports fitted with the KoLink™ Diptube insert. Sealed through transit; the consignee vents headspace before opening
| TYPE | S62×5 modified 2-inch buttress, female cap |
| MATERIAL | HDPE drive shell; fluoropolymer or UHP HDPE sealing element |
| SEAL | Captive sealing element; No O-ring, no elastomers |
| VENT | Hydrophobic ePTFE membrane — continuous gas relief, blocks liquid |
| SERVICE | H₂O₂ & gas-generating chemistries |
| INSTALL | Hand-tighten only — vent headspace before removing |
| FITTING | 2-inch connections across Kurko’s IBCs and drums |
6” Standard IBC Shipping Cap
Sealed transport closure for the 6-inch fill port on Kurko IBCs, with a 2-inch threaded center opening. A PFA-encapsulated O-ring seals against the liner neck land.
| TYPE | S62×5 modified 2-inch buttress, female cap |
| MATERIAL | HDPE drive shell; fluoropolymer or UHP HDPE sealing element |
| SEAL | Captive sealing element; No O-ring, no elastomers |
| VENT | None — 100% sealed in transit |
| SERVICE | Stable, non-outgassing chemistries |
| INSTALL | Hand-tighten only — do not over-tighten; remove slowly |
| FITTING | 2-inch connections across Kurko IBCs and drums |
2″ Threaded Bung Plugs
Sealed closure for S62×5 drum and IBC ports running without the KoLink™ Diptube insert. Also available vented for gassing chemistries.
| TYPE | S62×5 modified 2-inch buttress, male bung plug |
| MATERIAL | UHP HDPE; fluoropolymer model available per chemistry service |
| SEAL | Fluoropolymer-encapsulated O-ring — elastomer isolated from wet chemicals |
| VENT | Sealed standard; vented available — hydrophobic ePTFE membrane |
| SERVICE | Stable chemistries sealed; gassing service with the vented option |
| INSTALL | Recessed drive pockets — installs with cap torque tool |
| FITTING | Open S62×5-Compatible ports across Kurko Drums and IBCs |
KOLINK™ CHEMICAL KEY-CODING ELEMENTS
Press-fit rivets on the dispense head and blocker plugs on the Diptube Insert set a mechanical code across eight positions; Allowing up to 70 valid code combinations. A matched pair seats and flows; a mismatch cannot seat, and nothing dispenses
Dispense Head Push-In Rivets
Press-in rivets that set the dispense-head side of the KoLink™ code across the eight-position collar. Every head ships identical; rivets assign the code.
| SAFETY | Color coding is the visual reference; geometry enforces — a mismatched pair will not seat |
| INSTALLATION | Tool-free press-in retention — locked once seated; tamper-resistant options available |
| COMPATIBILITY | All KoLink™ dispense heads carry the same 8-position collar — codes standard or assigned |
| MATERIAL | Push-In Rivets Available in High-Density Polyethylene, Nylon, or Fluoropolymer |
Diptube Insert Blocker Plugs
Press-in plugs that set the insert side of the KoLink™ code across the eight-position ring. Every blank insert ships identical; blockers assign the code
| SAFETY | Color coding is the visual reference; geometry enforces — a mismatched pair will not seat |
| INSTALLATION | Tool-free press-in retention — plugs fill every position outside the code |
| COMPATIBILITY | KoLink™ Diptubes carry the same 8-position ring across IBC and drum lengths; codes are standard or assigned. |
| MATERIAL | Push-In Rivets Available in High-Density Polyethylene, Nylon, or Fluoropolymer |
O-Ring Seal Replacement Parts
Service replacement seals for the KoLink™ Diptube insert — four O-rings, one per sealing circuit, from base interface to dispense path. FEP-encapsulated silicone core; only fluoropolymer touches the chemistry.
| OUTER PORT SEAL | 57.5 × 3.3 mm — gas / pressurization circuit |
| MIDDLE PORT SEAL | 37.0 × 3.6 mm — vent / return circuit |
| INNER PORT SEAL | 22.4 × 2.5 mm — chemical dispense path |
| INNER PORT SEAL | 75.6 × 6.0 mm — insert-to-neck static seal |
| MATERIAL | FEP-encapsulated silicone-core O-rings; −60 °C to +205 °C service |