Vilsum Nylon Metric Core Vents

Vilsum Nylon Metric Vents are injection molded for high precision. Available from 6mm to 20mm in diameter and a slot width of 0.4mm, these vents provide a "non-stick" surface combined with the toughness of nylon. Ideal for medium to high pressure molding, they are highly recommended for use in blow squeeze machines, v-process, and with cold box and CO2 sand systems.

Please note: These vents will be discontinued when stock is depleted.

Our core box air release vents are now sold in full bag quantities (100 vents/bag).

Sand Modulus Core Vent Slot Width Core Vent Mesh Size
Up to 55 AFS
0.45mm (0.014")
40 Mesh
55-75 AFS
0.30mm (0.012")
50 Mesh
75-80 AFS
0.25mm (0.010")
60 Mesh
Above 80 AFS
0.20mm (0.008")
70 Mesh

SKU Description   UM Thick Width Length Height Board ft. Net Wt. Diameter Grade Grit Plys Radius SPB Ship Note Min. Qty Pcs/Box Pcs/Bundle Winding Ft/Box Handle Len Head Diam Head Len Mfg. # Qty
032351 Vilsum Nylon Vent - 6mm Diameter, 0.4mm Slot Width (discontinued when stock is depleted) CO BG 7MM 6MM 20

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Important Information

  • Shipping: Freeman charges standard published UPS/FedEx shipping rates (unless freight is specified). All orders under $25 are subject to a $5 small order fee. International orders are subject to a $250 minimum order.

  • Liquid products are sold by weight, not volume.

  • SPB = Sheets per Box

  • HAZ-G = Hazardous material, cannot ship air, up to $33 surcharge applied for each package shipped ground within the US.

  • HAZ-A = Hazardous material, cannot ship air, no surcharge for ground shipping.

  • HAZ-T = Toxic material, must be sent by freight carrier.

  • FRT = must be sent by freight carrier due to size, weight, or hazardous classification.

Product Table Legend

  Special Order

Minimum quantities and extended lead times may apply. Cannot be cancelled or returned once processed.


This item is not stocked in Freeman warehouses and may be subject to extended lead times.

  Limited Stock

Due to limited stock availability, extended lead times may apply.

  Closeout Item

Available at special pricing on our closeout list. Subject to prior sale.

  Web Discounts

Item is discounted for quotes or orders completed on the website only.

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