Revised for the original lipped seal ring use: the supported standard rings are the five specific supply sizes found, with the ring groove separate from the outer body. The lid bottom seats on the full lip. A coarse-thread blind seat on top takes the included printed shoulder axle, and the separate eye ring turns around the plain shoulder, replacing custom cut metal eye bolts and unspecified micro swivels; the main lid top is solid and does not open into the main cavity. For keeping small tools and dry accessories together on business trips or camping; measure items against the actual narrow openings. The software only checks geometry, the screw-on path and the press ring cavity; not sliced/printed; no sealing, waterproofing or transport retention is promised. Six suggested color pairs: terracotta/apricot, lake blue/coral, forest green/sand white, plum/mint, navy/mustard, mist gray/berry.

Listed part dimensions are outer bounds; usable interior space is given in this model's specifications.

The ZIP contains the complete STL and STEP files, a size list and notes. Version 1.0.1 Use the complete set of files of the same version and size for matching parts. Preview colors are for reference only; STL files carry no color.

Ranges are set by this model's structure; each combination must pass the studio's structure checks; matching parts update with the parameters.

1. Supply a standard O-ring, 60 mm inner diameter × 1.5 mm cross-section. Ring groove width 2.25, depth 1.20 mm; independent of the outer body height and width; do not scale the whole package. Nominal 20% axial compression; test-fit with your actual elastomer and tolerances.
2. The ring drops into the shoulder groove from above; the screw lid moves 3.5 mm axially per turn and stops when its underside seats on the full lip, leaving 0.4 mm above the mouth end. Unscrew counterclockwise at least 4 turns before removing the lid; do not force the threads. 0.35 mm radial/flank design clearance; the software does not calculate rubber compression force.
3. Full printed BOM (4 parts in total, all in the downloaded STL/STEP): 1 jar, 1 screw lid with a blind coarse-thread seat, 1 separately rotating lanyard eye ring and 1 coarse-thread hand-turned shoulder axle. The dedicated shoulder axle and swivel ring need no separate purchase, cutting or machining.
4. Current separately supplied BOM: 1 O-ring, 60 mm inner diameter × 1.5 mm cross-section (EPDM 70 ShA, Polymax 60X1.5E70); 1 plain round braided cord, measured outer diameter ≤ 2 mm and length ≥ 526 mm (includes 100 mm for the knot; a 1 m retail length works). Matching catalog: https://www.polymax.co.uk/catalog/product/view/_ignore_category/1/id/173825/s/o-rings-60mm-id-x-1-5mm-cs-epdm-70-sha/category/9999/. Catalog checked on 2026-10-11; not purchased; check stock and shipping regions when ordering.
5. Shoulder axle specification: printed root diameter 8 mm, thread crest diameter 10.4 mm, coarse pitch 3 mm, root section 8 mm; plain shoulder Ø12 × 9 mm, grip head Ø18 × 3 mm. The blind seat on the lid top is Ø16 × 10 mm with 1 mm from the axle tip to the blind bottom; the shoulder seats first; it is not tightened against a blind bottom. Eye ring clear inner hole Ø12.8 mm, 8 mm thick, 0.4 mm radial and 0.5 mm top and bottom nominal clearance. Do not scale the whole package.
6. Installation: drop the eye ring from above onto the blind seat on top of the lid; pass the shoulder axle down through the center of the eye ring, then turn the axle head clockwise by hand, lowering 3 mm per turn, until the lower end of the plain shoulder touches the top of the blind seat. Confirm the axle is on its shoulder and the eye ring turns freely, then tie the cord through the eye ring and the jar's outer tie ear; the ring drops into the shoulder groove from above; load items and screw the lid on at the main pitch until the lip stops. To service it, untie the cord, unscrew the shoulder axle counterclockwise (it rises 3 mm per turn), then lift the ring straight up; do not force the teeth apart by pulling straight. No extra metal tools, nuts, washers, glue or swivel rings.
7. Tie cord hole clear diameter 2.8 mm; use a plain round braided cord measured at Ø ≤ 2 mm. The cord first leaves the outer ear along Y, clears the side of the ear, then goes up and turns back above the lid's full unscrewing travel to the freely turning eye ring; do not fold vertically through the ear tops from inside the hole or tie it to the rotating lid edge. Ø3 mm product example Paracord.eu MT027473, sold by the meter, only for maximum diameter settings ≥ 3 mm; choose thinner cord by measurement; the 1.5 mm catalog example is sold on 100 m reels, or use existing thin cord.
8. Narrow opening clear diameter 46.8 mm; measure items against this opening and the actual clear height above the shoulder. The round main body is 72 mm in diameter, 88 mm wide including the side ears. When full, keep the ring, lip and thread areas clear; take items from the top once the lid is off.
9. For small tools/accessories only; no waterproof/airtight, diving or body safety equipment claims. Each time, check that the shoulder axle sits on its shoulder; stop tethered use if it is loose; before use, check printed thread loosening, swivel friction, retention, seal ring sealing, wear, heat resistance and strength; no transport retention or vibration resistance is promised.
10. Manufacturing: each part file is exported in millimeters at Z0; check supports in the slicer with the jar and eye ring bottoms down, the lid main opening down and the shoulder axle head down. The real thread, ring groove and blind coarse-thread seat need a fit sample; check slicing before printing.
11. Suggested colors: terracotta/apricot, lake blue/coral, forest green/sand white, plum/mint, navy/mustard, mist gray/berry. Colors do not change manufacturing size or model.

Import into your slicer in millimeters and check build volume, orientation and supports for each part. Test-print lids, drawers and connectors first, and print the full set once the fit is confirmed.