Home » Oil Heating Equipment » Vent & Filler Caps » Plastic Filler Cap Plastic Filler Cap Part Number: FC5080 KEY FEATURES:2″ BSP threadAvailable with or without chainsuitable for all standard oil tanks Enquire Now Description 2″ Polypropylene filler cap with chain, for all standard fuel storage tanks.Also available without the attachment chain.NBR Sealing Ring. Downloads Specification sheet – DOWNLOAD HERE