All Futura Vehicle trailers use the same type of 3500 lb (1,500 kg) hub. A wheel bearing replacement guide and parts numbers are in this article.
Futura Tech Guide - How to set wheel bearings
Wheel Bearing Replacement Parts (Contact Futura to order)
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Hub Seal - (Hub-SEAL)
DL-172-03 Bearing Seals - (1.719'' X 2.565'', 3500lb Trailer Axle, Double Lip Grease Seal)
Inner Bearing - (IN-BEAR-HISPEC) - Part Number - 68149RGB3 (2.5 x 2.3 x 0.5 inches)
Outer Bearing - (OUT-BEAR-HISPEC) - Part Number - L44649R (2.4 x 2.3 x 0.9 inches)
Wheel Bearing Grease.